Hi,
You might check your /etc/samba.smb.conf file to see how it is setup.
Here is an example from my smb.conf file that make the entire linux partition available to smvfp and leland. These two user are setup in the windows DNS and also on the Linux box, so there is no need for them to again authenticate when accessing the Linux Partition.
Also, I am including an example of setting up a share specifically for the Linux docs. Everyone that authenticates into the Domain will have access to the docs if they also have an account on the linux Box.
[C]
comment = Linux Partition
valid users = smvfp leland
path = /
read only = No
printable = No
browseable = Yes
[doc]
comment = Linux Docs
path = /usr/share/doc
read only = Yes
printable = No
browseable = Yes
You can manually open smb.conf and use your editor of choice to make entries like the above. Often this is more convenient than using the swat browser interface. You might also take a look at the smb.conf.bak file, as it has lots of examples.
Also, you might check out the documentation in swat. It is very through and even provide help on a per line basis. In particular you might want to take a look at the diagnostic utilities like smbstatus, testparm, and testprns.