Cosmos 1000 Hard drive cooling?

I run 5 hard drives. 1 74GB Raptor, 2x320GB Barracuda, 2x500GB Barracuda in my Cosmos. I'm a bit of a paranoid person, but I really think that putting almost no ventilation in the hard drive part of the tower was a mistake they somehow missed . Anybody have some kind of method of cooling hard drives in this tower? I'd rather have a 120mm fan blowing on them then those clip on stuff.

Cheers

What I've done is mount my HDDs in Zalman Heat Pipe Coolers in the 5.25" bays with Scythe Kama-Bay fans .. There just mounts and grills for 120mm fans so you can have them as intake through your 5.25" bays .. Tis a quite effective combination I've found ...