codec mp43

i download movie’s and it is a divx but i have the divx player and it still don’t play only movie’s i can play is avi the codec mp43 divx won’t play is their a codec i am missing

you can get the mp43 code on this site
http://www.moviecodec.com/download/mpegfix.zip
you could also give kazaa codec pack a go theirs a link on this site

Ia m trying to locate a codec oxc00d1101