Play old Movies with Divx 3.11

Hi

I am having some problems with some old TNG-Releases and I would like to try to decode them with Divx 3.11. I remember that Bsplayer happened to have such an option but now I just see one for Divx 4, which was AFAIK rarely used. How can I play old movies with Divx 3.11 and Bsplayer ?

And another thing : The problem I am experiencing is some strange visual effect, it looks like the framerate is dropping for some seconds. Does anybody have any ideas what might cause this ? May this be because of a bad rip ?

Bye
Major Kerensky