Linksys problem?

Hello,
I am trying to host on warcraft 3 the frozen throne
I have read numerous guides all of which tell me to type in my default gateway into the address bar to get to the linksys config
but when i type in MY default gateway it just says "This page is not running"
just the normal page is not working message.
Any help? its very frustrating
(I do have a linksys router :P)