Does this help?
Failing that: I have now changed PCs so often, I've written a checklist of things not to forget to do. While transferring your data files - documents, images, music and so on - is pretty obvious, ensuring you transfer files from other applications (in my case, for example, MS Money) is less so. Backing up your .pst files (if you're an Outlook user) is pretty vital, as is backing up your bookmarks/favourites.
I also have a long list of software I need to remember to reinstall (if you've never used it, check out www.ninite.com - absolutely brilliant timesaver). I also have a note of my email settings.
The other thing, of course, to make sure you have is drivers. Of course, those may be different for W7 (I've only ever moved from one XP machine to another.
How much of the above the files/settings transfer wizard takes care of, I don't know. I should have tried it, but never have. It might have saved me the hassle of having to go through Word, Excel, PowerPoint, Outlook and so on and setting them up again like they were before.