codec player for windows media player

Alot has been written by me and others about this.Go back a
few pages and the answers are there.or
Download Divx from www.divx.com.Cheers

-----Original Message-----
I have windows media player and downloaded several movies
from the internet which I cannot play because I need a
codec player/codec software.Can you tell me of a site on
the net where I can download codec.Is there maybe a
unerversal codec player tht works with windows media
player on xp

Thx
.