The "mencoder method" of extracting video from Studio-burned DVDs:
1) Download the Windows MPlayer package (just Windows Mplayer -- you don't need the Windows GUI for this) from MPlayer Headquarters...go to the archive downloads link and download MPlayer-mingw32-1.0rc2.zip, and unzip the resulting file onto your C:\ drive. I suggest that you rename the newly created directory as "C:\mplayer", so that MPlayer.exe can be invoked as "C:\mplayer\mplayer.exe".
2) Right-click upon and download this small batchfile: getdvd.bat and place it in the C:\mplayer directory that you just created. (In other words, put it in the same directory as the MPlayer.exe file)
The install (such that it is) is now done.
To extract a chapter from your disc, open "my computer", browse the C:\ drive, open the mplayer folder, and double-click on getdvd.bat.
You'll be asked for your DVD drive letter, which title you wish to extract, if you wish to extract chapters and if so, which chapters to extract -- you'll see a preview of what you selected (close the preview window to exit), then you'll be allowed to actually start the extraction. You'll give a filename (make sure the name ends in ".mpg"!), and then your video will be extracted.
This method doesn't re-encode the video at all -- it's kept unchanged. It does re-encode the audio into MPEG audio, which means that the extracted files are compatible with all versions of Studio back to Studio 8.
It's low-tech (an ugly batchfile), but it does seem to work. It's good enough for me, anyhow.
BittMann