From Windows XP Pro help:
"To require users to press CTRL+ALT+DELETE before logging on
You must be logged on as an administrator or a member of the Administrators group on a computer that is part of a network domain in order to complete this procedure. Network policy settings may also prevent you from completing this procedure.
Open User Accounts in Control Panel.
Click the Advanced tab.
In Secure logon, select the Require users to press Ctrl+Alt+Delete check box.
To open User Accounts, click Start, point to Settings, click Control Panel, and then double-click User Accounts.
Pressing CTRL+ALT+DELETE before logging on guarantees that the authentic Windows logon prompt appears. Requiring the use of CTRL+ALT+DELETE increases security and helps to thwart certain Trojan horse programs."
It would seem to me that accessing that will enable you to uncheck the box that requires this at logon but you will probably need the network admin's password (the individual who set this up).
I don't know if uninstalling the domain network itself would change the settings that exist in your computer that require using ctrl/alt/delete to logon.
You could try disabling or deleting the domains since your computer is no longer required to access them, but be careful not to delete your internet lan connection.
Edited by Enthusiast, 14 April 2006 - 03:46 PM.