Do you have Vob files in your video_ts folder?
I think you will need to merge the vob files together using FileMerger, which can be downloaded from http://www.doom9.org/
Make sure you just merge the movie files and none of the menu's.
If you then rename the vob file to mpg, adobe may open it.
If not use vobedit to demux the video and audio stream from the vob file, if you want to merge them back into a standard mpg (vobs are really just mpg files) then use bbmpg which can also be downloaded from doom9 or herehere
which also has the xp patch for bbmpeg. Alternatively get tmpg
from here which also has some good multiplexing tools. Doom9 has the demo of V2, the previous site has the last freeware version.
Once you have mulitplexed mpg you should be able to get it into adobe.