I bought a Hitachi camcorder (DZGX5020A) that uses mini DVDs and SD cards.  The model I bought doesn't have a USB output, so I can't plug it up directly to my computer, but I want to copy, save and edit the video on the mini DVDs after a recording using my computer.  How do I do this?  Is there some kind of software out there that can combine/convert the files in the 2 folders on the mini DVD [one for audio and one for video (.BUP and .VOB extentions are some extentions)]?  Do I need some kind of video/audio file converter or am I missing something really simple?

Thanks.