Assign user files

My hard drive crashed. I have a good backup of the c:\Users folder. I
replaced the drive and did a new Vista install, creating a generic admin
account. I've restored all the files to the c:\users\olduser folder. I then
created a new admin account with the same user name as the olduser. Vista
though created a User folder named c:\Users\Username.PCName. So, all of my
restored files are just stashed away in an inaccessible folder.

How do I or can I assign the restored Users folder to the new account or
recreate the old account on this new PC? I would like to recover all the mail
and other settings from the user folder as well as the data files.

Thanks,