Jimmy,
On your compter, click Start -> Run and then type in the box 'command' (without the quotes) this will bring up a dos box. Once at the command line, type: ipconfig
This will show you what your gateway address is. Once you have that (it could be 192.168.0.1), you will want to go to a internet browser and type that address in. This should then bring you to the setup page of your router. Just go through the menus until you see the 'keep alive' option.