garvani: It sounds like you think you will be able to move the drive into the new system and it will work once you have reinstalled drivers. Windows 7 is good but not that good. Ive tried doing this quite a few times at work but it has almost always ended up in a reload. The chipset on your laptop and the new desktop will have to be fairly similar for this to work.
"It sounds like you think you will be able to move the drive into the new system and it will work once you have reinstalled drivers" - yes this is what I originally thought.