VPS & Firewall problem

Hello everyone! I've got a burning problem with my VPS running under SuSE with Plesk. Well... I've tried to configure firewall thru YaST tool and I configured sth badly cause I lost access to my server. No problem, I though cause I still could switch to Repair Mode with Plesk... so I did. But the problem is, that when I'm changing anything while under Repair Mode, after restart all changes are changing back to old/bad ones :/ I've tried to edit /etc/sysconfig/SuSEfirewall2 or even delete firwall script from /init.d/ with no effect - files are returning after restart. My question is: Could someone please tell me how to turn off this damn SuSEfirewall and configure firewall in future only thru iptables ? -- greetings, Marek Mikuliszyn