my wireless internet is working on my laptop, but the internet wont work at all on my desktop. i have a linksey's router, and when i disable my wireless and run the wire from the router to my laptop it wont work. then if i try directly from the cable modem to my laptop it wont work either. how the hell is that possible? whenever i try it wired, i keep getting "limited or no connectivity" i cant for the life of me figure it out. any suggestions?