I have two fans on the side of my case and i was wondering, should they blow or exaust?? My computer is a Dell Intel cel at 1.10Ghz, 384 mb of Ram, a GeForce 4 mx 420 64MB(with a heatsink), a 40G Western Digital hard drive 72000 and a 20G Maxtor. Right now i have one blowing air towards the video card and the other one exausting heat off the hard drives. Is that my best option or should i change then around? Thanks!