Thanks for your details

Try the fixes in this sticky thread (stickies are threads marked in red, at the top of each forum section & they have answers to many common problems): If LW Will Not Connect

Can you find the model of your Airlink (will probably be some letters, followed by a number eg AR325W)? If nothing's showing on top, have a look underneath.

Who is your ISP (which company do you/your family pay for your internet)?