[folivier]

This is the unit that most of us have: http://www.silverleafelectronics.com/forum/25?q=node/6
It attaches to the diagnostic port under the dash then a usb cable to your laptop. You just need to tell them what type of connector you need. You have to download the software from their website and build your gauge set on your laptop. You can configure it anyway you want. Is yours a different model with a display screen? I believe Steve Bare has one like that and could maybe give your more info.