port forwarding with firewals-2.1-5

Hi there, Has anybody on the list got any success configuring port forwarding using firewals-2.1-5.rpm? I am driven completely mad. I followed all comments in configuration file, I looked thoroughly through examples, -- to no avail! I also tried ipmasqadm with mfw module--no good. What I actually need to do: I have SuSE 6.4 box as a firewall. I have an NT box on internal network. I need to make Apache running on NT visible from the Internet. Pretty simple, you would say. I thought it too. It appeared not so simple. Please help. -Kastus