Paul,the usb socket coming from front of pc has 4 wires?
It has a female connection with one port blocked off?
On MB it has USB male connector with one pin missing from the 10?
If this correct then plug the USB female connection into the MB.
The firewire connection is proberly similar.
Is that them just below were your PCI cards slots are there is 2
Then the one on the left of board 3rd PCI sllot up is for firewire.
Just above that firewire connection I think is your audio port.
Do NOT plug firewire in to a USB port.
Connections are circled in yellow
http://i112.photobucket.com/albums/n...266a_board.jpg