I have recently acquired a US Robotics modem and am unsure of how to connect it into my present system, which includes a Dell Dimension E310 with a Dell flat panel monitor, an HP Officejet 5610 All-in-One printer, copy, scanner, fax machine, with a telephone that includes an answering machine, all on the same phone line. I know I need a USB cable to tie it into the computer itself, but where and how to connect those phone lines?