Audi  A4 2002

I have got one of the  KKL Vag-Com Cables and downloaded the software, can
any one confirm which is the correct software version i should be using
with a Serial connection?? When i try to do a connect test when connected
to the car it does not find the car. (the power led on the lead lights up
to show theres power) but does not connect.

Also do you know where i can download all the drivers for the lead for the
PC, i got a CD with them on and instructions etc but i most of spent at
least 10 hours trying to get it to work./.  maybe a new version of
software and new driver will do the trick!..

Thanks!!