Not a problem. Stick with the fans you have in there now and see how you like it and how comfortable you are with your temps. If you feel the need to upgrade the whole setup and fill it with fans, like I did, then go with a fan controller.
http://www.sunbeamtech.com/PRODUCTS/RHEOBUS.HTML
I have the black one in my box. Fantastic.
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TFH, paraphrased:
the bultin brner wouldnt evn boot it a usb burner woud but ten it gaeve an eror after i typed teh prduct key. i dont no waht it was it was a missng file, i fergt waht ti was but ti loked imporant can any1 help PLZ?!
Check out PCP! (that's PCProfiles in case you thought I was on angel dust)
http://www.pcprofiles.com/p/hitchface