Cube vertical cross light maps

Hi there
When composing a cube map on HDRShop I find that the walls don't line up
properly when mapped onto a 6 polygon room, e.g. east wall doens't line up
quite right with north wall. Does anyone know what the best procedure for this
area is (i.e. views and cam params). I've already tried using the light probe
(angular map) with vh and vv = 10 degrees and am just experimenting trying to
make a cube vertical cross map using the same close up shot of the mirror ball
in HDR shop.

Thanks for any help


Tarik Rahman
PhD student, Institute of Perception, Action and Behaviour
School of Informatics
University of Edinburgh