Bob - Thanks for the reply. I have a USB CD drive that the Win 7 VM reads just fine (I have used it to load several old applications that only run on Windows). I have put USB to Serial cable in that same USB port, so as far as I can tell the MBP USB ports are bridged and working fine in the Win 7 VM.
I am sure that there is some really basic setting that I am missing, but I am at a loss. I have updated the Windows drivers, so not sure what to try next. Thanks for the help.
Chris