Help with a wireless connection

So I've got a laptop of my own right? It usually connects to the wireless router we have at home, but for about two days, its been screwing around and wont connect, even though I enter the right information and stuff... The switch is on and stuff... Any idea's about what's wrong?

 

IS the connection only bad on this site, or are there others?

 

If you still have the CD that came with your router, try using it to reinstall your router. Usually it will automatically connect you and change your connection settings.

Also make sure your computer is set to be connected to a wireless network, not a LAN line. It might be trying to find a connection with an ethernet cable rather then a router.

 

You could also try refreshing your i.p Address.
For example.

Go on command prompt:
Type the scripts down:

For Windows XP = ipconfig/renew or ipconfig/flushdns

For Windows Vista = Ipconfig