If you can't get the motherboard to recognize even a floppy drive, something is definately wrong here. Make sure you have all the cables connected correctly, and that the jumpers are set correctly. Try using only ONE HDD and the one floppy, first. Don't make the issue more complicated by trying to get all the drives to work at the same time.
Also, make sure you have your IDE cables in correctly, so that pin-1 is matched to the right side of the cable. I know the cable connectors are keyed, but I have learned in recent years that "idiot proof" is an oxymoron.