Perhaps telling us the whole story would be a better way to go.

What exactly are you trying to do.
Please supply the following info.
The name of your ISP and country of residence.
Make/model of the broadband modem.
Make/model of the router (if any).
Connection type, wired, wireless.
Make/model of network card or wireless adapter.
Make/model of your computer (motherboard if home-built).
Version and patch level of Windows, i.e. XP-Home SP2.