I found a couple interesting threads while I was poking around in VW land today. Thought they might be good to link here.
ZF 5HP-19FL (Our Tiptronic) Rebuild DIY - Audizine Forums, but done on a Boxster:
DIY: 5HP-19FL Valve Body Rebuild
Putting a Boxster transmission in a VW Passat.
(5-spd manual, but still interesting):
VWVortex.com - VW Passat 5spd identical to Boxster 5spd?