Finally! How to set the user’s data folder in a different drive in Vista/Windows 7, and re-use it after re-installing the OS

Have you ever wanted your C:\Users\YourUserName folder to reside in a different drive (other than the C: drive which you will need to re-format and re-install the OS occasionally..)?Well, in Vista you can relocate the special sub-folders (i.e. Documents, Pictures, Videos, etc.). In Windows 7, we have the ‘Libraries’ features. But neither one of these OSs let you actually relocate the entire C:\