AviC is a program which you should of got with your version of Xvid. Execute the program, open the Naruto file with it. Then change both Xvids to DivX. Then click "Apply". Then close the program, and open the file and watch away. Should work =P

If you can't find the program, check inside your Xvid directory in C:\Program Files\Xvid

if you dont' have the program... make a search on the net for it o_O