sign up on the vag-cat forums mate, its an online etka and your find a picture of the entire linkage.
that is jsut the finger that fits on the end of the selector shaft that comes out of the gearbox. the linkage from the gearstick connects via a splined rod that fits into a cage, the cage fits over the shift finger.
the diagram should explain it, if you were closer, id set it up for you, its easier with 2 people.
i find it best to push the selector shaft all the way in, get a mate to hold the gearstick in 3rd and bosh it in the splined rod and tighten, test all gears, forward and back movement should be fine, but its the side to side movement (to engage reverse/1st and 5th) that can be adjusted by turning the splined shift rod, in the cage.
dont break it for something simple