Ah right. I have about 5 hard drive spaces on the front of the case, but I don't think you can remove them, and it'd be blocking the 120mm fan anyway.
I've thought of going water cooling though, but I've never really known what differnece it'd make to my machine, though I've never been able to overclock.
CPU reading at the moment is 43 degrees C. If I overclock even slightly, that goes up to 50+, haha