How to get rid of Netware?

I'm assuming you're getting Novell client instead of your normal login screen?

Open your local area network connection properties, find Novell client in the list, and click uninstall. That's how we've been doing it in the schools since the advent of Client 4.x

Jam it back in, in the dark.

I'm afraid you'll have to give us some more specific information then, because the steps I gave you are the same ones any website provides. Under the assumption you're using Windows XP or 2000.

Where are you pressing ctrl+alt+del? Windows also gives you the lock computer button, and it will ask for your password if you click it.

While I may be wrong, I'm guessing that you're confusing the "advanced" windows login screen with the similar Netware variety, instead of the graphical menu, because Novell disables this. Under control panel, under user accounts, you should click "chang ethe way users log on and off" and check both the boxes.

There's nowhere I can't reach.