I have the same problem.. my ipod touch picks up wireless at home but my laptop doesnt (after a system restore)
But i am able to connect at work (now) to the wireless there and everywhere else
I check that i am doing the key correctly and i am and i have insured the settings are as you mentioned above and they are..
just re did them tho and asked to turn my pc off to refresh new settings so maybe when i connect tonight it will work?