credentials used when Windows access Samba shares ?

[davexnet]

HI all,
I'm troubleshooting a problem when trying to access my Linux Samba
shares from Windows 2000. I can see the share from within Win2k but I get an
error message "the network name cannot be found". (It's a permissions problem
according to one of the Samba logs)

The userid in Windows does not exist within Linux. I then setup a Windows user
using the same name/passwd as Linux and this time it was successful.

I want to access my Samba shares using my original (non-matching) win2k logon.
Instead of just rejecting me, I'd like it to prompt me for userid/passwd
so I could type in the proper credentials.

What do I have to do in Linux/Samba to make it behave this way.
Is it possible? Thanks for any info.

EDIT - I've found a link with some useful info and I'm going to give the location,
but I'm not allowed to post links yet. However, it can be found at:
tech dot waltco dot biz
scroll down until you see "Private and guest (no password prompt)
Samba shares"