How do those patch thingies work? I've seen other DVD posts someplace fixed by a patch. I'm guessing someone has to have both versions, and then generate some sort of .exe that can write the differences to the new file? Might be a bit of a bother up front, but then the solution should be significantly smaller than having to re-post a whole DVD at some point.

In fact, maybe only an .ifo and a .bup need to be changed? Something like that?

If someone's got both versions and is interesting in pursuing this, then I'll find out more about how to make a patch.