ACI Launches Enterprise Enrollment Online Banking Solution.

Real-Time Enrollment and Consolidation of Business and Retail Functionality Highlight Online Enrollment Solution

OMAHA, Neb. -- ACI Worldwide (NASDAQ:TSAI), a leading international provider of software for electronic payment systems, today announced ACI Enterprise Enrollments[TM], a customizable online banking enrollment solution featuring a stand-alone online banking enrollment engine designed to consolidate business and retail enrollment functionality in one product.

Enterprise Enrollments offers customizable screens, interfaces and workflow rules that allow end customers, branches and call centers to automatically enroll customers in all available online products and services. The product offers self-enrollment screens and forms designed for an institution's retail and business customers.

"In order to achieve industry leading activation rates, our customers need self-service enrollment functionality that provides immediate access to online services," said Ralph Dangelmaier, president of the wholesale banking division at ACI Worldwide. "Enterprise Enrollments is unique in the payments industry as it will allow users to be up and running immediately whether they are self-enrolling or enrolled via a branch representative The solution consolidates business and retail functionality in a single product, a clear differentiator in the enterprise banking market. In addition, Enterprise Enrollments provides financial institutions the opportunity to cross-sell various products and services during the enrollment process."

Enterprise Enrollments offers a highly customizable front end that allows customers to deliver a consistent brand and customer experience. In addition, the product allows institutions to consolidate multiple enrollment forms into a single enrollment process and automate the customer setup to individual back-office systems.

Dangelmaier continued, "We designed the Enterprise Enrollments to operate independently of an institution's core payments system, offering our customers a flexible front end system that will interface with multiple back end payments systems."

About ACI Worldwide

Every second of every day, ACI solutions are at work processing electronic payments, managing risk, automating back office systems and providing application infrastructure services. Founded in 1975, ACI is a leading international provider of solutions for retail banking, wholesale banking and cross-industry systems. ACI serves more than 800 customers in 83 countries including many of the world's largest financial institutions, retailers and payment processors. Visit ACI Worldwide on the Internet at www.aciworldwide.com.

Any statements in this press release regarding projected results are preliminary and "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. In addition, this press release may contain other forward-looking statements including statements regarding Transaction Systems Architects, Inc.'s ("TSA"), its subsidiaries or third parties' expectations, predictions, views, opportunities, plans, strategies, beliefs, and statements of similar effect. The forward-looking statements in this press release are subject to a variety of risks and uncertainties. Actual results could differ materially.

For a detailed discussion of these and other risk factors, interested parties should review the Company's filings with the Securities and Exchange Commission, including the Company's Form 10-K filed on December 14, 2005, the Company's Form 10Q filed on February 9, 2006, the Company's Form 10Q filed on May 10, 2006, and the Company's Form 10Q filed on August 9, 2006.