I've tried to rename the netbios name of a computer in my school so that it's uniform with the rest of my computers. I go in change the name, and the login screen pops up asking for the username and password of a account that can rename the computer. I put the administrator account in, and it comes back. "The following error occured attempting to rename the computer to "???????": the user name could not be found. Please help. This is on a xp machine.