From what you've told us, I find nothing wrong.
(only that instead of Mb it is 0.99Gb
).
Your dvd-rip was done succesfully!!
Vts_xx_0.ifo
Vts_xx_1.vob this should be 0,99
Vts_xx_2.vob //
Vts_xx_3.vob //
Vts_xx_4.vob //
Vts_xx_5.vob //
Vts_xx_6.vob //
Vts_xx_7.vob this should be smaller since it's the last one
Vts_xx_0.vob is also very small and it is not needed.
vobs 1-7 contain the movie.
the .ifo file is usefull because it keeps some information about the movie (also used by some programs in order to make the movie in divx format ex. flaskmpeg)