Linux to Internet router problem?

Here's my equipment.-Computer: Toshiba Satellite L645D-S4025
-Operating System: Kubuntu 10.10
-Router: Netgear WGT624 v3My computer connects to the router just fine, but for some reason, it won't connect to the Internet. I need to connect to the Internet so I can install Firefox (and not have to use Rekonq). I can't get to the Internet at all, even though my computer acknowledges the router's existence. What is the problem, and if you know, how do I fix it?Thanks for answers.