What do you mean by When I logged on for the first time through SBC Yahoo! DSL, my Administrator ID was automatically set up using my complete first name. ? Do you mean that you logged in via SBC Yahoo! DSL, and the account was automatically created, eithout asking for details ?
Go to Control Panel-System -Advanced Tab. Go to profile settings. Is your clone listed there ?
I'm less than one month into XP and find its peculiarities comical. The Dell whiz who set this new Dell XPS up listed him/herself as the first Administrator. When I logged on for the first time through SBC Yahoo! DSL, my Administrator ID was automatically set up using my complete first name. I then set up another account, also as an Administrator/User with the name I am most used to on my computers...Chris13. My Dell XPS loaded with Windows XP Professional has now listed another Chris13_2 in Documents and Settings. No matter what I do, I cannot find this second edition of my own name anywhere under Users...even through Computer Management which lists all Administrators and Users plus additional designations for XP Pro. Does anyone have any idea whatsoever as to what causes this behavior and how to remedy it? I voted NO on cloning sheep...I hate having a clone named after me...LOL!

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