One of the major problems with combining variouse BVH files is when the hip ( y rotation ) is 90 or 180 degrees out. Trying to correct this with a body rotation is messy and usually does not work ( also cannot be saved as a pz2 file ). You cannot rotate the hip globaly as this will mess up the animation. I have tried modifing the basic BVH files. this works but takes years and I wont try it again ANY IDEAS FOR THIS ??????