first thing my dvd drive is hanging for about 10-15 seconds before it starts to spin up im guessing i need to get a lense cleaner to fix that but not sure

secondly occasionaly the dvd drive disappears from "my computer" is this related to the one above

third im running NVdvd beta and MSIdvd and i have one dvd that wont play as it only has a folder full of vob files etc but nothing outside of it

do i need some other kind of software to load this kind of dvd ??

thanks in advance to anyone who can help me out with any of these questions