So, use this setting instead ... System Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] Value Name: DontDisplayLastUserName Data Type: REG_DWORD (DWORD Value) Value Data: (1 = remove username)
You could try this ... System Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList] Value Name: Administrator Data Type: REG_DWORD (DWORD Value) Value Data: (1 = show Administrator, 0 = hide Administrator)
Doesn't DOS suffer from the 640Kb barrier? (And it was Bill Gates who said "640Kb should be enough for anyone" - what does he know?!!) I'm not sure you can find out from DOS the total memory available.
If that's true, and I'm more than prepared to take your word for it, then I would create a second account with Admin priviledges. Which you should really do anyway, and leave the default Administrator account well alone!!