I picked up MC2 on Steam a while back, and it's the one I'm most familiar with. I had MC:LA on my PSP once, but I didn't play it for very long - I feel like I should revisit this game. I also tried emulating MC1 on PC, but it wasn't playable.

I just made a .bat script which checks for the presence of a mm2.lock file, deletes it if it's found and starts the game. Then I made a shortcut to the .bat file and set MM2's icon to it. Works like a charm.