[helib33]

I have try imtoo dvd to divx/dvdx/xilisoft to convert a dvd to avi, but it can't play on x20, I need to use iriver plus 3 to convert these avi again so it can play on x20. I also use badak to convert rmvb to xvid, it can play on x20 but after I FWD the moive, the picture & sound can't be synchronize.
Does anyone know which software can convert a dvd to avi directly (without using iriver plus 3 convert the avi again) and make it synchronize even I FWD the movie??