Don't know if anyone has posted this or not, but here it is anyway:
To Make the Administrator Account Always Visible on the Login Screen
[Start] [Run] [Regedit]
Registry Key: HKEY_LOCALMACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserLis t
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: DWORD// Value Name: Administrator
Setting for Value Data: [0 = Disabled / 1 = Enabled]
Exit Registry and Reboot



LOL****