Well, I've found threads in numerous places saying '05 has issues with win7, and TWPGAT06 is not on the list of supported applications for win7. You can of course always just try it, and if it doesn't work you may be able to run it in compatibility mode. Here is a link to how to run windows in compatibility mode: http://windows.microsoft.com/en-US/windows7/Make-older-programs-run-in-this-version-of-Windows