its a long process.
to convert mpeg1 (vcd) to mp4 or 3gp (same thing i think) files to load onto my mobile phone i use nokia multimedia converter click here this works with any compatable mp4 or 3gp device not just nokia. and is quick to do.
to convert the dvd first though you need to rip it first, split it if need be and then convert the .vob files to mpeg1 format and then convert this againto 3gp or mp4 and this will take some time.
cant give you any more info than that here sorry, have a look around this site for more info click here