I found the answer to the .ICA file. This is how you do it:
1. Start Published Application Manager. (On the MetaFrame desktop, click Start, point to Programs, MetaFrame Tools, and then click Published Application Manager.)
2. In Published Application Manager's main window, select an entry in the list of published applications.
3. In the Application menu, click Write ICA File, or right-click the published application and select Write ICA File.
4. Follow the directions on screen. When prompted, save the ICA file to some location on the Web root of your Web server.
You can test ICA files on any system on which you have installed one of the ICA Windows Web Clients and that can access the Citrix server using TCP/IP. Copy the ICA file to that computer and then double-click it in File Manager or Windows Explorer.
Now....what needs to be done to create an ISS Silent Install of the ICA client and integrate this ICA file?
Thanks.