Step 1) Buy new machine with Windows 7 on it if that's what you are going for.
Step 2) Install PC Mover from the link above on both machines, put them both on the same network or connect them directly
Step 3) Click to transfer programs and settings and the rest.
It would be much better if you were able to do a clean install, but that is not always possible, so there are other options for you other then messy image files and drivers and all that.