Try renaming the .vob as .mpg and it may be playable without any modification.
.bup and .ifo are the menuing files.
aha... yes, the .vob file is the big one.
So, after I rename it to be .mpg, do I then put it in a folder, then create a link that points to the file? What happens when a user clicks on the link? Does it download the whole file to the user's PC, then plays the DVD? Is that what I want? How does the user's PC know to use e.g. Windows Media Player or RealPlayer with that file?