I converted a VOB to an MPG file.

If I open the file with a dvd program such as PowerDVD it plays and navigates fine, if i open it in a program such as Windows Media Player I can't seem to navigate within the file and it's all screwy.

When I open the file in an editor (Vegas) Vegas only opens part of the file (the 1st 6 seconds) and I can't get the program to see the whole video.

Any ideas? This is driving me nuts.