Log on to NT server with Novell client?

HQ uses Novell Netware 4.x. I have Novell Netware client installed (v4.82 with all patches) on my notebook running Windows XP Pro. Works fine.

Problem…branches using Windows NT 4.0. When I travel to branches, the Novell logon screen comes on. How do I log on?

Was using Win98 and it works fine. When Win98 detected the presense of Novell network, the Novell logon screen would come on. If it detected an NT network, the Microsoft Network logon screen would come on. Not so with Windows XP Pro. Would appreciate any help.