As you might be able to tell from my earlier post, I've started a move to Windows 7. The first one was an in-place migration from Vista on my XPS laptop. I'll be doing a migration from a Windows XP to a new Window 7 desktop a bit later this month.
Two immediate changes I needed to make after the move to Vista:
1. I had been using DAEMON Tools Lite (and not been all that happy with it) to support mounting of ISO image files. I didn't find the latest version Windows 7 compliant, although they claim it is. Fortunately that forced me to look around, and I found a much better product in Virtual CloneDrive, which works great under Windows 7.
2. The best that I can say about the Windows 7 login screen is that it sucks in a major way. Fortunately, it's customizable, though it takes a registry tweak to enable that. I didn't bother providing a different image for the different resolutions though, providing one image as "backgroundDefault.jpg" and letting Windows stretch it to fit works fine for me.