Front usb panel

i have recently bought a new atx which is using a front usb panel and my mainboard(asus P4 M925 series) is able to support.but i dun how to connect the front usb to the board.the linking wire provided is labeled usb1+,usb1-,GND1 and VCC1 for the istusb port and usb2+,usb2-,GND2 and VCC2 for the second usb port.And there is 2 set of 9 pin each labeled usb1 and usb2.How should i connect or how am i suppose to known which to which to connect?