i ripped "main movie" files from gone in 60seconds with dvd decryter.

the movie is too long for just one dvd-r, i would like to use 2

the files i have in my video_ts folder are as follows

VTS_01_0.VOB (seems to be big chunk of 1st part of the movie)
VTS_02_0.VOB (seems to be big chunk of middle part of the movie)
VTS_03_0.VOB (seems to be big chunk of the end of the movie)
VTS_01_0.IFO (the main guy, doesnt play anything but needed to make dvd-r work on my dvd player?)

i read somewhere that i should also include the following files, in addition to the "main movie files"

video_ts.ifo
video_ts.bup
video_ts.vob
vts_01_0.bup
vts_01_0.vob

can someone please tell me what the above five files are in detail - and also let me know what the original movie files are exactly (i really dont have much of a clue)

if gone in 60 seconds wont fit on 1 dvd-r i was going to burn the following files to disc 2, will this work or am i totally doing something wrong

VTS_01_0.IFO
VTS_03_0.VOB

then the following to disc one

VTS_01_0.IFO
VTS_01_0.VOB
VTS_02_0.VOB


i just bought my $170 cendyne from office max and have had great success backing up my dvds - to burn i just throw in all main movie files and the above 5misc files and use "nero dvd-rom udf" setting and joliet instead of iso under "label settings"

someone please gimme some info or help, i have learned a little bit so far but i still think there is much more to learn

thanks