Danny, I recently looked into this also, and after posting a similar question here I purchased the VAG-COM compatible cable below. http://cgi.ebay.co.uk/USB-Vag-Com-Compatib...1QQcmdZViewItem I have nothing to do with this seller, other than being a happy customer. I then downloaded the drivers for the cable from the site below for the cable. http://stores.ebay.co.uk/alpha-bid/Manuals...-Downloads.html This presents to the Windows system as another Com Port (COM4 on my system) Then downloaded the VAG-COM 409.1 from Ross-tech.net (Free version, some limited functionality) http://www.ross-tech.net/vag-com/download/...lease4091us.exe installed and choose the serial port as specified above. (after connecting to Galaxy Diag Port first) From then I followed the online manual from VAG-COM to learn how to use it. http://www.ross-tech.com/vag-com/tour/main_screen.html I'll probably register VAG-COM soon as I'd like to dabble with the full functionality, but for what I needed to use it for initially it worked perfectly (Testing MAF). Hope that helps, there are lots of other cables available on Ebay as well as one from ROSS-TECH itself, but I chose this one because it was cheap ! and another user on here had also purchased the same cable. Darren