Win 2003 (workgroup) with 4.91 sp2 client.

All was well until a couple of days ago. Novell login screen with blank user
and ldap context-less login all working fine. Started getting "domain
controller could not be found" error. Got thru that by changing the From
field on the Windows tab to the server name, it was an IP address. But now
when RDPing, after entering credentials at the RDP client, it goes directly
to the desktop with no netware login processing, no mapped drives. Can login
manually. All registry settings appear correct. I don't know what changed
but I did notice that the Zenworks 7.1 desktop management agent somehow got
installed (inadvertently thru a login script I think). Any ideas to correct
would be greatly appreciated.