Im not familiar wth Linksys but I know that if your computer has the same IP range as the AP than you should be able to log onto it. Try reseting the AP, make sre you get link lights on port 4. If you have a good connection with the wired computer (port 3) then dont mess with that, just make sure you dont have any filters enabled: like MAC filters or IP filters.

anything else just AIM: theguy386