EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Donald F. Dillon --------------------------------------- Donald F. Dillon POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Leslie M. Muma --------------------------------------- Leslie M. Muma POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Daniel P. Kearney --------------------------------------- Daniel P. Kearney POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Gerald J. Levy --------------------------------------- Gerald J. Levy POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Glenn M. Renwick --------------------------------------- Glenn M. Renwick POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ L. William Seidman --------------------------------------- L. William Seidman POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as her true and lawful attorney-in-fact and agent, with full power of substitution, for her and in her name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 1st day of July, 2003. /s/ Thekla R. Shackelford --------------------------------------- Thekla R. Shackelford POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Kenneth R. Jensen as his true and lawful attorney-in-fact and agent, with full power of substitution, for him and in his name, place and stead, in any and all capacities, to sign the Registration Statement on Form S-4 relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $100,000,000 aggregate principal amount of unsecured debt securities to be issued by Fiserv, Inc., any or all amendments or post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of the 2nd day of July, 2003. /s/ Thomas C. Wertheimer --------------------------------------- Thomas C. Wertheimer