Well, unless your laptop is a DC or the account's been removed by a domain admin, it should have a local administrator account. When you login to the machine, make sure you're logging into the computer, and not the domain. (I'm sure it can be configured so you can't do this) Then create the local account.
To choose where you're logging into, hit the 'Options' button, which should have a 'log onto' drop-down list. This isn't as straightforward if you're using the Novell clients. There you've got to choose 'workstation only', then you've got to hit 'advanced' and goto the windows tab, and there's the 'log on to' drop-down list.
Sure, a domain admin can create a machine local account, but logging in 'machine only' ensures that the ability to do this is there.