Forwarding a Router?

[DeltaPhoenix]

First: I HAVE TRIED PORTFORWARD, BUT IT DIDN'T WORK!

Hi. I have this problem with my router. It's a ZyXeL P-2602R-D1A.
Before i got this router, i could host games online anytime. But when i got this, i can't host at all! The reason PortForward didn't work, is that the password is not the default and i can't figure the new password. Is there other ways to be able to host games online that using the guide at PortForward?
(The game is mainly Warcraft III)

 

[DeltaPhoenix]

I found the problem i think...
The password was correct, but it just redirects to the login-page EVERY SINGLE TIME i press "Login". I tried to reset the router and login and it got in. but if i choose Wizard, nothing happens and it redirects to the login-page. If i choose Advanced, it goes to the main page and screws it all up, so i can't connect to ANYTHING. And that's the only time i can log in, so i can't fix it again, unless i restart my router again.
Any ideas?