It's very easy to upgrade from Vista to 7--just about as easy as going from MacOS X 10.5 to 10.6. ;\) But seriously, MS did a bang up job on the upgrade process. It checks for incompatible programs, asks you to uninstall them, and then does its thing. It's pretty quick, as far as Windows installs go--or at least compared to the eternal XP install.

I am the Doctor, and THIS... is my SPOON!