Those interested in a commercial upgrade assistant for migrating to Windows 7 might take a look at LapLink's PCMover Windows 7 Upgrade Assistant, which is not to be confused with PCMover (which won't do the job). It seems to be both reasonably priced (at fifteen bucks before October 22) and is downloadable. The promotion can be viewed HERE. I have also seen it boxed and bundled with PCMover and cable, on a store shelf.

I can't vouch for it one way or the other, beyond admitting to my considerable respect for LapLink products, and I will have to look into it more carefully to see what it can or cannot do for me. Since I already have all the other major LapLink pieces, it is of interest to me.