my motherboard (only a year old. asus p5gd1) supports only 5 hard drives, though i don't know about ide or sata pci controllers. if they can add more hard drives or not after the 5 limits. so my question is, can i add a pci control to my motherboard and get more hard drives going after the 5 hard drives. how do you install one? i heard you have to do it before installing the os (windows). can you install pci controller after installing the os (windows)?