You just plug the cable that comes off the case to the appropriate socket on the motherboard. This assumes your MB has the socket. If not you will need an add in card. It will have the socket on it, as well as some 1394 sockets on the back.http://www.newegg.com/Product/Product.aspx?Item=N82E16815124032
The cable on the case has a header plug, it won't fit that card. I can't find any cards that have header pins on them. One had pins on Newegg, but I checked their site and they were for testing only, not for 1394. I can't find an adapter that converts from the internal 1394 plug to header pins. You may want to just plug your cable into the back of the case and leave it there. It makes me glad I got a DQ6 in case I ever want to use 1394. Good luck.