Can you clarify what exactly you are trying to do? I think it sounds like you have two machines, one is Red Hat linux, one is WinXP and you're trying to get the two to share files.
you need to make sure that samba is correctly configured and running. best wayt to do this is to:
[CODE]$> ps -awuxx | grep smbd
if you get a result, then it's running. Try connecting again.
If not, reply back and I'll try to help you further.