Very much the wrong place. The thread (and all posts) concern tips & rules for newbies (aka you)… It’d be best put it in a new thread in the Newbie Forum with a title that describes the problem - aka “DVD Drive spins continuously in in Vista Business”.
No driver/programs are required to access your drive in XP nor Vista… the drivers to access the data on the discs are built in to the OS for you. I will suggest that one of your “Driver Programs” are the problem.
These driver program do other things, like play DVD’s or Burn Data.
Burning … greatest program ever is IMGBURN (it’s free).
DVD/Movie Player software is really up to your own personal preference. I prefer a simple codec pack (K-Lite Mega Codec pack) with media player classic, or WMP.
Many commerical programs have “autorun” handlers, which tend to fight over access to your drive, when a disc is inserted. Something which is completely unnecessary … if you want it to play, you can run the program, and then it can handle the disc
I have autorun features turned off (when using windows) also as a matter of security. Hurray for Sony & their rootkit installers!