just do it like this:
http://2.bp.blogspot.com/-A248glqefV8/Tdp2QhuXzJI/AAAAAAAAAEc/OXO4PmOzGQQ/s400/comp_w_cooling.JPG


xD no this is not my rig...although i wish it were...

EDIT: forgot to add to use 6 of them instead of 4 in the same format