Converted Divx movie to AVI to dark to watch

Hi All, I have just converted a Divx movie to AVI using DVD Santa, however when I burnt it onto a DVD the picture on playback is unviewable as it is that dark. The Divx is a rip from a DVD and plays OK, it just seems to be when I convert it. Being new to this kind of thing could anybody out there please shed some light (Oooops, no pun intented :rolleyes: ) on what the possible cause might be, or suggest a better way of converting and burning.