One warning though Bosse, make sure you order the correct cooling pad, some draw the air down through ur PC, and some blow air through the PC, it should be doing the opposite of what ur onboard fans are doing. some fans draw air in from the bottom to cool the pc, but dell's for instance have vents on the top of the pc where the keyboard is and the fans draw air in through those vents and blow it back out the bottom. if your's draws from the top then the pad you order should pull that air through faster in order to help your fans cool.
-Hippie