I've just got DOpus v6 to work in vista RC1. no work arounds required, works "out of the box".
The only item I can't get to work is the drives / partitions to load in at startup in a dual pane lister. fortunately I still have the configuration setups that I used before V8 was released.
It really does work.
Am I relieved or what, when a person gets used to DOpus it's a real pain to work without it.