Actually they did help, or would have helped. I seem to have stumbled across the info on the VMX file on my own and got it working. I logged onto the Forums to try and comment to my own message. All I can say is that these hints do work.
Not sure how up-to-date the info on Parallels not working is, as they've come up with several version updates since the era when they did not support USB HID.
One thing, strange, was that I did get a few COM port errors (COM1 in Use) on the Windows (VM) while trying to tie into the Crown amp. But now these errors seem to have gone away completely now, and System Architect is behaving itself and communicating to the amplifier.