Script or Batch file

Is there a script or batch file that I can run to change the directory of a users home directory under their profile in the usermgr for domains? For example:

user A
path= h:\oracle\users\mis\userA

user B
path= h:\oracle\users\marketing\userB

What I would like to do is keep their paths the same, but change the drive letters to C. How can I do that? Notice though, their directories are different, it is the drive letter that I want to change.

Thanks.