Maybe give FFmpeg a shot? Itβs a really solid tool, though I guess it can be a bit of a headache to wrap your head around at first... but man, once you get it, the possibilities are just insane.
Sorry I'm a bit late to the party here, but if I can be of any helpβmaybe give DVD Decrypter a shot if you're dealing with a physical disc. If it's just two VOB files sitting there, though, I'm thinking you might be out of luck...
That is such a barbaric way to do it! Look, try this instead: just grab something like xmpeg or ffmpeg, encode the file into a lossless codec or maybe just use a super high bitrate in xvid, and then you can stitch it all together using VirtualDub. It works, I guess.