W2K DC recover user profiles???

[mrh981]

Hi!

I neede do fully re-install W2K adv Servers + Domain Controller.
Kept the same domain name.ex: loc.here.com

But when users re-log-in the new loc.here.com the Win Xp pro does not use the same account but creates a new one with .000 at the end of it.
Ex,: loc.user1 >> loc.user1.000
This creates a lot of problem because I have to go to each user and copy or move the original setup and files.

Is there a way to recover the original information easyly or to prevent Win2kPro and XPPro to duplicate users.

Thanks