converting vob files to imovie

I am trying to convert vob files from a NON COPYRIGHTED dvd to imovie. I have downloaded streamclip and purchased QT mpeg-2 playback. I have imovie 5.0.2. I have moved the files from the dvd to my HD. When I got open the vob file with streamclip it asks me if I would like to open all of the files of the stream together, I hit OPEN 1 FILE - it then says, “File open error: unsupported file type”.

HELP!

I’m having a problem similar to this, but I do it all the time this is the only time i’ve gotten this error, i use mpeg stream clip. I have a dvd I got from a DVR recorder, I open the dvd which shows 2 VOB files in the TS folder. the MENU gives “Warning: the stream may have timecode breaks." I “Fix Now” and it works fine. But i dont want the menu. the other VOB file in the TS folder, which should be the “movie I want” gives this error when opened,
“File open error: unsupported file type”
when I open anyway, I get an audio bar which has no sound, and no video.
ANY IDEAS? I’ve been on this for hours PLEASE