Well, pleasingly I have achieved what I didn't think I could and that is to have both Qemulator and QPC2 both running side by side on a MAC system with LION OS.
Qemulator is the MAC version, whereas QPC2 was running on my PC laptop and gave me a problem with key mapping (see older posts) that I couldn't resolve. QPC2 has been installed and running under PlayOnMac.
PlayOnMac can be found here http://www.playonmac.com/en/ and is a WINE based package so no second emulation stage.
Finally goodbye to PC based on Windows for most things now, yippee.