firewall issues?.. need more sources?...no downloadin!

[a l k s]

I have win xp and I am connected to the internet through a server which has a firewall. The internet connection is DSL. I have opened the port 6346 in the virtual server of my router and forced my IP in my limewire pro settings yet I still can't download any music. I always select to download songs with multiple numbers 50 - 130 and it says that I need more sources after waiting a long time. Pressing the button "find sources'' only brings me to...''awaiting sources'' and nothing happens then. I could initially download songs but I don't know what happened now. It is very frustrating...

p.s. my router's online tech support said: Limewire: "click tools>options>advanced>firewalls. check Force IP, and then in the box Adress enter the WAN IP adress of your router".

There is no box Adress there!?....

Please help me solve my problem

Thank you

a l k s