Is there any way to use Mac OSX command-key combinations? (I've looked but I'm new here so may have missed something)
There's a lot that you could do with a few command-key combinations for OSX.
Command-Shift-G = brings up a dialogue where you can type any path and the finder will go there.
In Mail, Command-N and Command-Shift-D = create a new email and send it.
Command-Q could be fun too. I mean 'useful' For that matter: 'Command-Option-Shift-Escape' held for a few seconds force-quits the front-most application (can you hold a key down over time w/ ducky?)