I know you've probably done this, but when I set up a wireless router here
I have to do a few things like:
1. Make sure it has a working connection to the Internet;
2. give the router the info to log onto the ISP, including User ID and password;
3. Set up the wireless NIC so it uses the router's IP address as it's gateway.
4. Set up the SSID, filtering, and other security stuff