|First of all this is quite a common problem, but if you give us more information such as answers to the questions below, we might be able to help you better.|
Which router do you have (brand+model)?
Have you checked in your router configuration pages, whether obtain IP by DCHP is selected?
Have you tried disabling your firewall? (if you have one)
Do you have an installation CD that came with the router?
How is your PC connected to the router?
Θ ER4S3R Θ
Beware of computer programmers that carry screwdrivers.