Well, thanks guys. I looked twice through the CS3 Object Model and cannot find Shortcuts in there.
I thought maybe it could be tackled by trying to forge obj model Panel or Menu or Menu Item or Sub Menu .... but now I am wildly guessing as to what CS3 classifies the Shortcut Set. It really isn't a Panel, but could it be a Sub Menu? Someone with deeper knowledge of this would have to be able to point the way and hence the property to reach it. Only then could I enter the string ("MadMac") and get to it.