so it seems like that codec doesnt exist

it is my thinking that when ulead vstudio create dvd discs, it effectively renders your timeline to mpeg2. so that if i render from AE to avi and then i put it in ulead, it is as if the rendering will happen twice (AE to AVI to mpeg2). i think im just kind of wanting to quicken things up
EDIT: I just came to know AE 7 can render to mpg2. How come AE 6.5 cant :(