Try this...from the "how to" section...
If that doesn't work, you'll need to get one like this...
http://www.ebay.com/itm/99-00-01-VEH...940f2e&vxp=mtr
http://www.ebay.com/itm/REMOTE-CLICK...264d2f&vxp=mtr
http://www.ebay.com/itm/99-00-01-VEH...940f2e&vxp=mtr