Is there any application that could let my keyboard work with "turbo" buttons? When I hold "A" for example, it will repeat that keystroke X amount of times per second for as long as it's held?
Tough one. I haven't found anything that just does it, and I'm not sure how this would work in games, but you might try looking at keyboard macro recorders - if nothing else, you should be able to program a preset burst of presses.