You can try PortForward.com (
http://portforward.com/) although I didn't see your router listed there either.
However they have a small applet you can download that will take screenshots of your router admin pages and then hopefully they will be able to make a guide for it. I used to them to set up port forwarding for uTorrent, but there ended up being an issue with my ISP which they couldn't resolve.
Nonetheless, they were very patient and helpful.
