@Pelvis Popcan, everyone that has posted is right, but they are men of few words.
forgive me for clarifying a little bit.
copying and pasting will get the files from point A to point B if you have AnyDvd Running, but without it running, if there are any structural or mastering errors those will get copied along with the files, and you may have trouble processing in programs that are not as closely related with anydvd and/or not updated as often (or at all...ie dvd shrink)
the anydvd ripper performs the same functions as the program "FixVTS" as it rips to the hard drive. you could theoretically copy and paste, process through fixvts, then process in whatever transcoder you use, but that's adding a whole extra step in. Anydvd runs the files through FixVTS AS is copies to the hard drive.
give FixVTS a google to find out more about what it does.