Only Ross-Tech cables work with the full version of VAG-COM. All of the cheap cables you find will only work with old versions that are out of date or the shareware version.
http://www.ross-tech.com/Merchant2/m...ry_Code=VAGCOM
Either get a HEX-COM or USB or a KEY-COM or USB, you don't need CAN since your car doesn't support it. Only VWs after 2002 use CAN.