A popular problem!
Comment out disable=yes in /etc/xinetd.d/swat, and it should work. However as you have RH7, it will probably have activated total isolation firewalling, so either temporarily disable it or sort it properly.
Back up the original /etc/samba/smb.conf, and tinker away.
Check out http://www.linuxnewbie.org/nhf/intel...ba/samba1.html
for a good howto for those of us who are not network gurus.