wireless conx

m using a laptop i have internet access on the laptop, also i have a pc with the same wep key as the laptop.the pc is about 15feet away from the laptop, both report an excellant signal from the same access point/router, but the pc cannot get onto the internet,im using the hex 26 character in both client utilitys.both running xp,,,wasnt sure where to post this question ?
any tips