I just got Vag-Com to work with Andy Whittaker's adaptor cable
I registered the software and so I now have all of the bells n whistles.
Andy's adaptor works well, and is a little cheaper for us Brits. It is however just a bare circuit board, and you have to make up the cables yourself (you can just buy the RS-232 one) and put in a box.
Andy actually sells an unpopulated PCB so that you can make the adaptor yourself. I have the ability but no the time anymore. The adaptor is optically isolated like Uwe's.
Of course by buying the adaptor seperately from the software you don't get the same level of support if thinks don't work.
Also got a laptop.
I'm Hertfordshire / Essex border in England.