Easiest way would be to reset the router. Hold down the reset button for at least ten seconds. Everything should be set to the default. Now you'll want to go in and set your own passwords. You'll want a username and password to be able to change the settings. Otherwise someone could go in and change your settings. Once that is done set up a password for the router. You'll want to use the best encryption possible. WEP is easily cracked so you don't want that. Once you have made a password for it go to your laptop and try to connect to the wireless. It will ask for the password. Enter it and the laptop should successfully connect. You can also try it without the password first to see if it works. But you definitely want it password protected! Otherwise people around you can use your wireless; if they are up to no good it could come back on you!
Billreyn
February 2010