Dr. Divx is good. But too slow.
Instead use divx codec in some other s/w .
The best conversion s/w i have used is WinAVI video convertor.
Convert to any type. Lot of options.
Choose any codec. Divx will do good.
The speed is of best of all.
the entire dvd can converted within 90 mins for 352*288 format.
Its not free s/w. 30day evaluation is available in the site.
www.winavi.com
All the best
-Vishnu-