1) Go to Start Run and type command.com (OK) to go to a dos window
2) type CD\ and ENTER type CLS to clear your screen
3) type GETMAC /v and write down your Network Adapter MAC address
which will look like 78-E7-D9-9E-33-BC
4) type IPCONFIG to see what your PC's IP address is and write it down.
5) exit the dos window
6) start internet explorer
7) on the back of your router is your default router address. Type it
in your browser address bar. IE http://192.168.0.1
8) Your router password should be on the bottom of the router. If not, phone
the tech support dept. of the Manufacturer for the default password.
9) once you have your router password, you are free to go inside and EDIT
settings to allow your PC to use the Router.
10) within your router menus, see if you can add your PC to its
security tables via your MAC address or your IP address. Without seeing
your router's menus, its hard to give you accurate menu navigation.
11) save your settings in the router.
12) restart your router. IE power off and power on
13) Try another internet session and see if you can connect.
If you are still having issues, you may have to pony up and pay
Netopia, or Belkin or whatever brand of router you are using.
Best of luck