Hasta La Motion!

I’m doing a simple composite of a game model into my garden. I created a HDR and plugged it into the mip_mirrorball node, however I can’t work out how to rotate this. There doesn’t seem to be any reference to this in the documentation. I’ve tried the Homer Simpson approach of rotating the scene but the HDR dome goes with it.

Secondly I’m kind of new to passes in MR and passes in Maya 2011 in general. I’ve worked out how to create them using layers, and how to get them to save out as individual files.. but I don’t actually know which ones I want because there’s so many to choose from. What would you suggest for this type of comp to give a good degree of control. In my scene I have one key and the HDR.

WIP:
http://dl.dropbox.com/u/1992790/portalradio.jpg