Looking for free download of Knights of Honor

I played the game a long time ago and loved it. I had a CD for it. My CD broke and I now have a new computer so.... I don't want to have to buy it AGAIN. Any help??

Ps: I realize it is an OLD game for YOUNG TEENS, but I remembered the game the other day and wanted to play it for a little for old time sakes.

EDIT: here's the game: http://en.wikipedia.org/wiki/Knights_of_Honor_(video_game)