How do I make one single IFO file to account for 4 separate parts?

[Salva Veritate]

I recently downloaded a torrent that was split into 4 different "sections" with separate .ifo files. I'd like to make it all one part. I'd like to convert it to .avi as one big show using AutoGK, and I can't do this under the current conditions (it only converts each VTS section separately).

Since I don't know the terminology and my explanation probably sounds muddled, I want:

VIDEO_TS\VIDEO_TS.BUP
VIDEO_TS\VIDEO_TS.IFO
VIDEO_TS\VTS_01_0.BUP
VIDEO_TS\VTS_01_0.IFO
VIDEO_TS\VTS_01_1.VOB
VIDEO_TS\VTS_02_0.BUP
VIDEO_TS\VTS_02_0.IFO
\VIDEO_TS\VTS_02_1.VOB
VIDEO_TS\VTS_02_2.VOB
VIDEO_TS\VTS_02_3.VOB
VIDEO_TS\VTS_03_0.BUP
VIDEO_TS\VTS_03_0.IFO
VIDEO_TS\VTS_03_1.VOB
VIDEO_TS\VTS_04_0.BUP
VIDEO_TS\VTS_04_0.IFO
VIDEO_TS\VTS_04_1.VOB
VIDEO_TS\VTS_04_2.VOB

to become something like

VIDEO_TS\VIDEO_TS.BUP
VIDEO_TS\VIDEO_TS.IFO
VIDEO_TS\VTS_01_0.BUP
VIDEO_TS\VTS_01_0.IFO
VIDEO_TS\VTS_01_1.VOB
VIDEO_TS\VTS_01_2.VOB
VIDEO_TS\VTS_01_3.VOB
VIDEO_TS\VTS_01_4.VOB

With one .ifo to rule them all. What program do I use? (Tried DVD Shrink and TMPGEnc DVD Author 3 unsuccessfully, if I was doing something wrong, please point me towards the right direction =\)

[U2Lynne]

Those are just different 'chapters' of the DVD. It will burn as a DVD with one menu. You realize that, right?

I'm not sure why you want to make an avi from it when it is DVD ready, but you can probably find a tutorial or application to help you do it over at videohelp.com. But, you should only do it for your own use and trade the show only as the DVD it is.

[Salva Veritate]

No, they're not "chapters", they're entirely separate "sections". They convert on AutoGK separately, which is the problem. I will trade the DVD as is and I only plan to do this so I can convert the whole show to my iPod (which is what I did with about 40 other shows and I never encountered this problem). I can't join the files after converting them on AutoGK, so this is my only option.