sorry, the problem is solved now, i used Google and when i search Rip DVD to htc evo 4g i find the program i need, it not only rip dvd but also convert video to my htc evo, works like a charm.
i'd like to share here:
http://htc-evo-4g-video.converter-mac-os.com/how-to-convert-dvd-movie-onto-htc-evo-4g-phone-on-windows-7/
i'd like to share here:
http://htc-evo-4g-video.converter-mac-os.com/how-to-convert-dvd-movie-onto-htc-evo-4g-phone-on-windows-7/