[fsgond]

I would reset the router to default.

Plug in your computer and let it get an ip

go into command prompt and type in ipconfig

look at the gateway field, it should be something lie 192.168.*.*

type in whatever your number is into firefox or IE and you will get to the router page

you will need the default password, it should be in the manual

This will allow you to make whatever changed you need to make.