@radar103:
With Kickstart 3.1, the delay for the IDE-harddrive has been increased to 30 seconds which means that if you don't have an IDE-harddrive connected, you will have to wait much longer for the computer to boot than with Kickstart 3.0 - atleast 30 seconds, so be sure to wait long enough.
This might not be the most helpful picture, but hopefully it should show you how to connect the cables from the front. Btw, the computer should work just fine without these cables connected to the mainboard.
/Patrik