Cropping With Mencoder?

Hi, I've been searching through the forum but haven't found a solution to my problem. I have mpeg movies ripped from my TIVO that I want to play on my M6. What I would like to do is convert them to DIVX and crop off about 2 pixels horizontally across the very top of the video. I can do the cropping with Virtual Dub but I can't get it to make a DIVX that will play in the M6. I'd like to do it in one step rather than using multiple programs. Any suggestions?

Thanks,
Jason