I have a Dell Inspirion laptop with a wifi card. I have a belkin 54G router. I have a Dell XPS420 desktop using a Linksystem UBS wireless device to get to the internet. The XPS works fine. The laptop worked fine from day one. All of a sudden it won't connect to the router. It sees the router but won't connect. Took the laptop to the library and it instantly linked to there router. Any suggestions?