yea thats it, i asked the same question like 2 weeks ago but it got ruined by some jackass. idk whats up with mine, i think its blocking it from accessing the router, but idk
u have to make sure the airport is both 802.11 or whatever B AND G compatible, or at least B. the psp runs off the B, i think because B is faster, idk but yea thats why its not working