Im trying to run two scanners... a bcd996xt and996t using ProScan on an old Dell Optiplex running Windows XP Pro SP3. One is connected to Comm Port 1 using a serial cable. I tried to connect the second scanner using a USB cable... But under options for the software, I am only offered Comm 1.. no other ports appear. Is there something I can do to add a comm port? When I look at my device manager, All that is shown in COMM 1 and LPT1 (printer port) .. I dont even have a printer. Can anyone help?