Manual for dummies ...
1. Plug it in. (Do i need to say both power and to the modem (phone-line) and a tp-cable to your computer from the router) =)
2. Go to your computer.
3. Click start/run and type: cmd in the run-box. (If using win95/98 you type: command instead)
4. Click ok after typing. (A console opens if you did it right)
5. In the console type: ipconfig and press "Enter/return" (If using win95/98 you type: winipcfg instead)
6. Check if you got an internal ip-adress, subnet-mask and gateway. (If not: The easiest way might need to just reboot or type: ipconfig /renew and press "enter/return"
7. Your ip looks something like this: 192.168.0.100 or 10.0.0.100 or it could be loads of different actually depending on the settings of the router.
8. Write down the ip of the default gateway on a paper or just copy it from the console.
9. Open Internet explorer and type:
http://gateway-ip
10. Press Enter/return to execute.
Not trying to flame you dude, just boosting your networking-skills
P.s.
If the above manual doesn´t work:
Do this --->
or this --->