I didn't want to start a new thread, but my problems are almost identical to Ned's, although in my case I do see the LEDs cycle once I first plug in the unit.. when I try to Connect to the device, I get a quick flash of the two PC LEDs but nothing else.. then I get the Communication Error prompt..
04-14-2011 11:48:17.875 Comm Port 3 successfully opened.
04-14-2011 11:48:17.875 Tx: ATZ
04-14-2011 11:48:23.046 Rx: Request Timed Out. (ATZ)