I want to put my old hard drive that has files and was used with windows vista and put it into a new windows 7 laptop. Is there any overlap or any config problems I can run into doing this? Or do I just put it in and the old files should work and all i have to do is update some drivers from vista to 7?
if you swap the HDD from your old laptop to a new laptop then you will have driver issues unless the two machines are identical.
Are you just trying to use files (music / video / documents) as this is very straight foward. If however you are trying to use an entire Operating system (Vista instead of Windows 7) then you may encounter problems with the specific hardware.
I would stick with Windows 7 and use a USB flash drive to copy my documents over