uSignInTM In Out Software has the following System Requirements: The software must be installed on a Web Server. You must be able to install and execute Perl (version 5) scripts on that Web server. Members in your organization must have browsers that support JavaScript. The following browsers/operating systems have been tested and are known to work: Netscape 4.x, 5.x, 6.x Win95/98/2000/XP/NT Netscape 4.x, 5.x, 6.x Linux IE 4.x, 5.x, 6.x Win95/98/2000/XP/NT