bvh animations and getting "mirror" to work correctly (SL question)

does anybody know how to setup Blender to be able to Mirror a pose left>right??

what i want to do is setup the left side of a pose and have the right side move to match

think of the vitruvian man in t-pose and then in the X pose

the other hook is that im working with

which causes some “issues”

if you reply with “works for me!” please list your EXACT blender version with any plugins you have installed

question for the mods who could i ask to make a SecondLife bvh editor plugin??