I'll second the EASE unit: www.easesim.com
. The $300 dollar version will do everything that the $600 one will. The difference is that the data signal can come from four different pins on the OBDII plug. The professional version doesn't need to be told it just asks all four contacts and deals with the one that replies (handy if you don't know what protocol SAE, ISO, PWM, forget the last one, that the car has).
When you buy the consumer version, one will get the matching protocol to the cars being viewed. Almost all European are ISO.
WARNING: OBDII scanners only talk to the diagnostic module or the ME module. They DO NOT talk to any other systems.