^ yes, search good for "dvd rip". easiest one is DVDShrink, but they stopped the develpment and it might not be able to rip some of the newer DVD protection. Or AnyDVD would be another good program that once installed, you can drag n drop files as normal and it works in the back ground.
No, once you ripped the vob file, simply copy it over. however, most ppl would rather conver it to AVI as it's much smaller in size yet to make sure it plays smoothly.
Ripping DVD depending on how fast your DVD drive is and how much scratches you have on your DVD.
if nothing goes wrong, 16x ripping meaning (very idea but hard to achive) 5~6 minutes for the whole thing. But in the real world, I would say 10 minutes or so for each 2 hours film.
Converting to AVI depending on the quality of your encoding. It can range from 30 minutes to 4~5 hours.