Windows Logon Prompt persisting

I have a similar problem to Tom (post 23 June. We
changed our server software from Novell to Windows 2000
and, ever since, several of the Windows 98 workstations
display the Windows Logon prompt, which the user has to
Cancel and then Logoff before obtaining the network logon
box. The AutoLogon entry in
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersi
on\Network\Real Mode Net does not exist. I have also
found a reference to ProcessLogonScript in
HKEY_LOCAL_MACHINE\Network\Logon, but this does not
exist, either.
Finally, I have looked at the instructions in Article
152104 but, even when I logon locally at can see the
Change Passwords tab, the option to change them is greyes
out.

Any help anyone can offer will be gratefull received, as
this is driving me nuts!