Great, thanks for clearing that up.
I thought that '2' was the key, but as nothing happened when I was pressing it, I started to think that there may be more to it. I do like the clean switching b/w game and back to the wheel.
Any suggestions on where to I start looking at why the 'volume menu' did not show? Currently I have my HS configured for only the MAME wheel,.. StartScript starts HS ==> HS intro ==> MAME wheel.