also, read this thread: http://forums.vwvortex.com/zerothread?id=1216091

Heres a short clip:

"Programming the remote…
You can do this with either a VAG-COM or two keys of your car. But if you only have one key, then a VAG-COM (or your dealer) is your only solution. See the VAG-COM instructions here:
http://www.ross-tech.com/vag-c....html

If you have two (or more) working keys of your car, then you also the option of doing it without using a VAG-COM. Just do the following:
1. Insert any one of the working keys into the ignition lock and switch to the ON position without starting the engine.
2. Using any of the remaining keys, manually lock your car from the outside.
3. Press either LOCK or UNLOCK on the remote (to be programmed) once, then wait 2 seconds.
4. Press either button again once.
5. Switch off ignition and remove key from ignition.
6. You should hear a beep as a confirmation that the programming is completed"