Hi - I need help! I have a realtek wireless usb adaptor on my hp desktop that was working until I took it out of the usb on the front of the tower and plugged it into a usb on the back of the tower. Now I can't get internet at all even if I move it back to the front! My network doesn't show up under connections. Both the playstation 3 and the netbook are picking up the wireless signal from the router.