i have just set mine up - havent yet been able to check it as have not finished building the PC
i have the ASUS DELUXE P4C800 motheroard so im guessing it is similar.
if you have the manual life will be easier - do you have it/
on the cables it may say one hting but the manual may have other things labelled. a small thing:
1 +d = usb_p6+
1 -d = usb_p6-
1+vcc = usb+6v
2 +d = usb_p5+
2 -d = usb_p5-
2+vcc = usb+5v
one of those (either the left or right) will be written on the cables. and the other may be written in your manual/on your motherboard
this may help - but reall yyou need the manual or a copy of the pages