Dive letter problem

[Gman]

just re-installed vista and for some reason its installed it on drive letter F, It's labeled my old D drive to C and my old E drive to D.

any idea how I can get my vista back on C without formatting it again, and even if I do format how do I go about forcing it to choose C ?

 

[Gman]

I fixed it the hard way in the end. disconnected all drives apart from the OS drive, then formatted and reinstalled. Then when everything was up and running I reconnected the other drives