I honestly really appreciate you guys trying to help, but when it comes down to it, you guys just aren't reading my posts carefully enough, and what you are suggesting just flat out won't work, because, as I have said numerous times now, the Airport card IS NOT RECOGNIZED by the PowerBook.
I have come to the conclusion that this is indeed a hardware problem. Why it chose to work one second, and then the next I try to hop on the internet not to work, I have no idea.
It can't be a problem with my 3rd party router, because nothing changed with it between the time I was using it at home, went to school, then came back and tried to use it again. Furthermore, nothing changed with my PowerBoook either.
All the other computers work fine (including my iMac, which has all the same updates installed as my PowerBook).
And another thing, Mlobo01, if you would have read my posts, you would have seen that I have stated several times that I have tried more than one Airport card in the slot.
I will update you guys if I do decide to get it fixed, but I will most likey sell the damn thing.