FC1 Samba (3) with windows 2000 Server

Hi !
I just installed FC1 and running into a big wall with samba server

I just used the same smb.conf file as my redhat9 samba server which was working just
fine with my Windows 2000 Server.

I can browse public directory service but when I try to mount home drive,
the windows XP Client prompt me with a user and password 

Do anyone ran into the same wall ?

Thanks for your help.
Steeve Gagne