it lagged quite a bit, anyway. there's
Camtasia, which is linked from Camstudio, so i dunno if you've used that. you've got a 30 day free trial on it, after that you have to buy it. but i tried it, and it works fine. but change the recording frame to 800x600 on this one, otherwise i think it cuts the bottom off whilst playing the game.
but i'm no expert, i was being daft at the end of my last post. i'm just doing a trial and error sort of thing.