they use up huge amounts of disk space, I ripped Waynes World and it was 6 gigs, you need a program like DVD Shrink to bring down the gile sizes if this is a problem (I once had 18 gigs of film on my laptop before I deleted it) http://www.mrbass.org/dvdshrink/
i think that can rip them as well but im not sure, i dont use it
Im really not sure if this is illigal or not, if it is, please delete this post,I dont wanna get nailed by the FBI (even though i live in the UK)