your idea is pretty good but if i would move the case over the airvent the only way into this room would be blocked and everybody had to step over my case...
and the second thing is that i will move to germany on the 6.1.02 and i will be watercooling there, so no need to cut up my case now.
and btw: yes it looks ghetto but if it brings10C cold air in the case, i dont care
