After recent readings on this forum I have gleened valuable Information on the fuction of my Aux heater ( re- air Con ) having just forked out a fortune to have the glow plug replaced _ could have done it myself after reading articles / pictures from this forum- but thanks because I can now convince my wife that the car is not going to blow up when the smoke comes from the rear.... I would like to know where I can purchase a ' VAG-COM ' so I can do some checks .. Although I'am a ' newbie ' to this I would llike to know where I plug it in ;menus, etc and any Info anyone could pass onto me abouts its use... Your JRL