|I assume, you're trying to connect wirelessly to your router, right?|
If so, did you configure the security settings in the wireless connection, that are configured in your wireless router, to get connected to it?
You have to use the correct network name (SSID), encryption type (WEP, WPA, WPA2) and the encryption key.
On how to get the correct settings from your router, read the routers users manual and look for the WLAN section.
The original poster should always write the last response !!!
Let us know, if the problem is solved !!!