The part (most likely part number 1J0711256) is inexpensive (probably about $30 at the dealer) and requires taking off the airbox for access (unbolt two 10mm head bolts and detatch the clamp at the intake hose) Being a plastic part, it just snaps into place. It should not require that you adjust the shifter linkage (unless you have moved or loosened any other parts)
If you need help with setting the basic adjustment (only if you loosened something else) let me know, it's fairly simple
Yeah, if you are looking at anything at all like what we see in the part department at the dealership, quite often the picture says "parts may differ from pictured". In fact, we were looking at the front end of a 99 Jetta the other day and it had the front torsion beam for an old Beetle pictured.
again, if you do need to adjust the basic setting of the shifter after install, let me know. It shouldn't need it, but just in case something moved.