I bought the NETGEAR Wireless-G

All you have to do is to open a internet window and go to the address 192.168.1.1 and login with admin and pass with admin


After that all you have to do is go to security and set a wep or wpa encription and a key.

Do this connected by cable so you wont lose connection when the router reboots to apply changes.

After the router reboots, do a wifi scan and check if the connection is pass protected. test with the pass you gave and voilá, you got a secure connection.

Hope it helps, tell me if you need any more support.

Cheers