Recently bought a Dell desktop with Win 7 Home Premium, 64-bit. Already have a purchased copy of Win 7 Pro (with 64-bit). Tried to do the upgrade, but it won't let me. Tried the Windows Anytime Upgrade thing, but it does not give the option of "I already have the disks/key" and wants me to buy it (again). I don't want to wipe, but could if I have to. Now what? Don't bother? Just a home networker, not a developer... Thanks!