I've found W7 to be great so far but I agree with what others have said and do a fresh install, and steer clear of compression. I recently put W7 on my desktop (tripple booted with XP and Ubuntu) and an old vaio laptop. I've found the W7 OS uses less resources than a fully updated XP OS. XP with no updates is lightning fast but add all the security updates etc and it just bogs down.

