i have a dell dimension 4550 got the system specs if you need em... basically.. my networking adapter doesnt work. in device manager, it shows the lil yellow questionmark next to the ethernet controller in the network adapters section like usual.. ive downloaded the drivers from the euro dell site for my model computer and tried installing them each rebooting between tries.. no success. its an on board network device.. ive tried installing a linksys networking card, but for that didnt work either.. im not sure what the problem was there. i need the ethernet controller to work so i can network my pc to my xbox.. advice? solutions?