Investors and security holders will be able to obtain free copies of the registration statement, prospectus and other documents filed with the SEC by ACI and S1 through the website maintained by the SEC at <a href="http://www.sec.gov.">http://www.sec.gov.</a> Copies of the documents filed with the SEC by ACI will be available free of charge on ACI???s internet website at www.aciworldwide.com or by contacting ACI???s Investor Relat