The SE uses DXT textures. They either have a built in interpolated alpha channel or in some cases seperate mask images seem to have been used. Height shouldn't be a problem as long as he is the same size or SHORTER than the SE version. If he is taller, you might get more overlapping problems with parts of rooms (door frames, etc).
Oh and you will eventually have to generate that new alpha channel for your version, so keep that in mind when altering images.
Last edited by Guy.brush; 07-21-2009 at 02:59 AM.