Hey everyone, first post. I bought an Intel iMac back in the end of 06 and recently I've been wanting to customize it more and more everyday. Mainly I want to try overclocking it for games, I have both OS X and XP on boot camp and I would also like to know if it is at all possible to change the CPU in it to some more powerful. And also would like to know the best option to get 5.1 sound in hopefully both OS's. My sound system is a Logitech X-530 so it connects through 3x 3.5mm (1/16") jacks. PS: Please don't go on about how bad overclocking is, some people like to do it.