Here is a link to a decoder that will identify the installed options on your VW.
Actually I believe it is supposed to work on all VAG product lines.
The codes are three digit alpha numeric and can be found on a sticker located in the trunk of the vehicle or in your owners manual. (Like the one below.)

Enter each code seperated by a semicolon, and click decode to generate a list of installed options. (eg. 1G9;1XX

Modified by just4fun at 10:39 AM 1-27-2010