How to get my computer to connect to my Wi-Fi?

Okay, I have my Wi-Fi set up. I have and iphone, blackberry, galaxy, ps3, 360, and laptop all set up and running with it. My desktop however reads the network is there with good signal, but after I try to connect and enter the network key, it tries to connect but then just stops and returns to the available networks list. The computer uses xp. I haven't used it in a few months, finally got it unpacked from my move. I've called my ISP and they reset my box and reestablished my network but it still will not get online. Any help would be great.

ISP wouldnt help you that much… I think you should call the man you bought router from… If there's any promblem with the router, he would exchange it… And also there's a lot of work inside comp to connect to Wi-Fi… So you coulndt do with it alone… Hope it helps

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