Gump
If you click on a file that has compatibility files the tab will automatically show.If the "compatibility files" tab does not show for a particular file,then there are no compatiblity files for it.
Compatibility files are stored in the virtual store under the user's profile; username/appdata/local/virtualstore.You must have "show hidden files and folders" checked under file and folder options.
If your running with the user account control on compatibility files will be in the virtualstore,if your running with it off there will be no compatibility files because they will be in c:/porgram files(x86)
Idea, make sure that you are running as Administrator when you install shit, another Win 7 issue, a lot of things you do, right click and run as admin, TooT