SLE PPP & Firewall under 7.1

Hello: I'm unable to get a good connection after setting up the SuSEfirewall* config scripts and re-booting. Apparently the scripts prevent a proper "dnslookup" with my ISP after logging in. In any case, I get a message from my ISP saying so, and I've inspected the 'firewall.rc.config' file carefully to see if something there is blocking things, but I can't see what it might be. I also am unable to 'ping' my ISP. If someone has any ideas, I'll be happy to send more details... Thanks, Hal