I've never tried your distro, so you might have to install it. Anyways, you should have a configfile /etc/smb.conf or /etc/samba/smb.conf
Before use use swat, make a backup of this file, as swat overwrites it.
Samba is using smbd and nmbd to operate (In adition to smbclient and some other applications). I'm not sure if smbclient is enough to be a member of a domain, or if you will need smbd/nmbd. Where they are located depends on distribution. Probably something like /usr/sbin