I got a new computer the other day that is loaded with Windows 7 Ultimate. I just loaded up Carlson Survey 2010 and there seems to be no problems. Carlson 2010 and Widows 7 seem to be playing well together.
Setting up a computer with Windows 7 Ultimate was a snap, even for me. MUCH easier than XP. Everything seems to happen automatically....even more so than on XP. So far it looks like a really nice new system.