Here's how to change the admin account if you forgot.
Also, if you happened to change to a domain logon but don't have a domain, then you "log in locally" or the name of the machine is the domain.
Ok I've got a good one here....
After changing names on the computer from my brothers to mine, my computer no longer recognizes his name at the logon screen to get into winxp. I've tried typing in my name, my husbands name and nothing works. This is the error message I get...
User name or domain is not correct, check password, and user and type again.
I can't get into my computer for nothing. (And I"ve tried safe mode, and it won't let me in that way either) Any ideas??