i have a cable modem connected to one computer and i have another computer in another roon that i want connected to the same modem, but the cable company says that i cant have 2 cable modems in my house. so how do i connect the new computer to the one that already is connected to the cable modem. i aam tryin to do this as afforable as possible...can i get a usb cable or something?..i have no idea what to do!