I am definitely going to try this!!!
Why?
Because I have an old scanner I like that works with XP. I am about to install a new hard drive and put an XP partition on it just for this scanner. Win 7 for the real OS I will be installing and using on this computer
I have the ssme problem with my backup XP Computer.
My scanner is the Linotype/Hell Jade Model.
On Window 7 (XP Mode): I tried that and it would not recognize the Scanner.
Hope you have better luck.