I'm a newbie when it comes to modifying cases, and I was wondering how I would go about putting a nice hole in the case panel (or the top of the case) and then attaching the fan on it. The fan size would either be a 92mm or 120mm. I saw those holesaws, but do you just make a hole and put the fan in? How would you make the screw holes? Any help would be great, thanks! 