Man... I had a game just like this back in... I think it was Windows 3.1. Brings back memories, it does.
EDIT: To be honest, it's not really playable right now. Could you assign the upper left keyboard keys to the Pandora's face buttons (abxy) instead?
EDIT2: Sorry, nevermind - I see that you can assign keys inside the preferences in the game itself. I assigned the rotations to ABXYLR, so it works great now. This game is a lot harder than tetris, though.