Hi, having problem with divx movis taht i made myself, when played on DVD player, most of the time, audio is out of sync and even video not too stable, but when I play it on computer, its perfect

I'm using WinAVI video converter v6.2, is this a goo dprogram to use?? or the settings i chose is wrong??
\
btw i'm converting from RMVB -> divx

Please Help