Question : Win 2k and Win XP

I'm having a small problem with accessing a windows 2k computer from windows xp. I'm working on a medium sized LAN and all computers (bar one) are running XP. None of the XP machines can access the windows 2k computer, but yet the win 2k computer can access all the XP machines. When I try to access it via start->run and tying in "\\win2kcomp" I'm prompted for a user name and password. I enter the Admin name and password, and then get a message telling me I don't have permission to access it.

If I try navigating to it via My Network Places, I don't get asked for a password, I just get the message.

But yet, if I try access any computer from Windows 2k, I get access wothou being asked any passwords.

Networking isn't really my thing, so I would appreciate any help I can get.
Thanks

Answer : Win 2k and Win XP

Also if the above does nothing...DO this as well

Create a new local user id on both machines and put them both in the administrators group on that machine..

on the xpmachine add this to the local administrator group  2kmachine/2kusername
on the win2k machine add this to the local administrator group xpmachinname/xpusername

..Make shure both machines are in the same workgroup.  Log both machines on with the new user accounts

TRy and connect useing the normal windows method and also try the net use method..

Let me know the results...

What I am trying to do if non of this works is narrow down were the issue is actaully located...