what are your system specs anyways.?
if had win7 professional or ultimate then it could be tried under xp-mode.
win7 home doesn't have that option.
it might be worth it anyways to windows anytime upgrade to win7 pro or ultimate since you have valid install, look into it.
with enough RAM (4GB) I think is the requirement try xp-mode.
Unfortunately, this isn't my computer (mine is a vista that doesn't work so good anymore). It's my moms. It's an HP Pavillion dv7. 64 bit OS with 4GB ram. It has Windows 7 Home Premium