hopefully this will make life easier for others.
the lead that i used is a usb obd11 diagnostic lead 409.1 kkl vag com from ebay.
http://cgi.ebay.co.uk/USB-OBD-II-Diagno ... 6591029386
the driver that comes with the lead uses normall windows buffers you need to update these from here LATEST FTDI CDM Drivers 2.06.00
http://www.ftdichip.com/FTDrivers.htm
THATS IF YOUR LEAD HAD THIS CHIP INSIDE IT MOST HAVE.
install the new driver and change the latency to 1 as shown in the how to on this site. take note of the port number .
plug your lead into the car then into the labtop choose your type and make shure you change the port setting on the fiat software turn your key to mar and hit connect.
abs test etc is next.