Reset Passwords With Administrator Account in Windows 2003 Server

When Windows XP was originally installed, it created an Administrator account for the computer. Of course, this will only be helpful if you remember what password you assigned during the initial Windows XP installation (or if you left the Administrator account with a blank password, but you wouldn’t do that, right?). This account does not show up on the standard Windows XP Welcome screen, but it is still there if you need it. You can get to this account in two ways:

1. Ctrl-Alt-Del: While you are at the Windows XP Welcome screen, if you press the Ctrl, Alt and Delete keys (you press them together simultaneously, not one at a time) twice in a row you will invoke the old standard Windows login screen.
2. Safe Mode: Follow the instructions in Starting Windows XP In Safe Mode to reboot your computer into Safe Mode, where the Administrator account shows up as a User.

or Just go to Active Directory & Users