This might be related to what you're asking, ssween. From an old post: "To have your figure 'start' the motion at the center of the studio: 1--Make note of your figures hip x, y and z trans values at frame one. 2--Apply those values with 'opposite signs' to the body x, y and z trans at frame one, e.g. negative one hundred x trans on the hip would correspond to positive one hundred x trans on the body. To see if it worked go to your main camera view and restore it (ctrl/shift/H) at frame one. The figure should be spacially oriented as if it were a default figure (except in a 'pose' now) in front of the default main camera orientation." Bvh files made me crazy until somebody taught me that.