wrong forum.
DVDcryptor was a great DVD ripping app, but you can no longer get it. Therefore, DVDFab is probably the next best one.
For converting to AVI, use AutoGK, or Dr DIVX. AutoGK has stopped development, but is still good with XVid, or with DivX5. For DivX 6, use Dr. DivX, or AVI.Net.
http://labs.divx.com/DrDivX