About Windows 2000 and Windows 98

Hi,
I have one w2k adv. server with active directory installed with some policies enabled.I am trying to connect my windows 98 system with w2k server.But when i try to connect it ask a IPC$ password and when i enter my server password it gives me error that password not correct but password is working in other prof. clients and also on server.How to connect my win98 system with w2k server.
Regards.
Anurag.