i wouldn't hook that cable up to your car, ...I have heard terrible things about knock off cables, ....erasing EPROMS, immobilizers not working, ......stereo's being locked in SAFE mode for years, asteroids from outer space landing on your car, it is horrible to go through if you hook it up, .....think endless gremlins.......
in all seriousness though, ..........you won't find much support on here for an "ebay cable" as the people from Ross Tech(who made the original VAG-COM for your car) are active members, and contribute to the forums by helping owners with problems that occur, ..........and i am not 100% sure but i am thinking Sebastian works for Ross tech....
Craig, i see your a newbie, just trying to help you out, .....not saying that people don't use the ebay cables, they do, but when it doesn't work, or you need directions on how to perform a certain procedure, you should just ask the person you bought it off of for those instructions and help...........