Ok, I think I get it now? The Slink-e device does not control X-10 (CM11a). The Slink-e OCX sends X-10 commands to the Slink-e DCOM server which in turn sends RS232 to a X-10 Powerline Interface (TW523) connection to a PC serial port. I need to get this card and a interface cable, correct http://www.x10.com/products/x10_tw523.htm Thanks, Jeffrey J. Borghoff jeffreyj@borghoff.com