QUOTE (bumbrella @ Oct 19 2009, 10:59 PM)

I downloaded new drivers and VLC, and cleaned the discs. Still no luck with the laptop, but a friend checked the DVDs on her TV and it works fine there. Well, maybe she'll want them.
Thanks for the advice!
*flail* Whoa, hold up! Don't start giving away DVDs until you've exhausted every last option. Those things are expensive. Not to mention we want you to be able to enjoy your DVDs! :)
Now, let's see... I know it seems like a silly question, but have you checked the Region on both the DVDs and what your MacBook is set to? I had a friend with a similar problem and it turned out to be a region issue. If the DVDs are regular ol' US Region 1 and that's what your MacBook is set to, then there shouldn't be a problem, but I would suppose it would depend where you bought them. *shrug* VLC is supposed to fix the region problem, but I know some Macs will just spit the DVD out if it's the wrong region.
I don't own a Mac myself, and have never actually used one (eep!), but I've heard that using the "repair permissions" feature can sometimes help with this issue. Here a link to a little more about it:
http://support.apple.com/kb/HT1452 Maybe you could ask DoggyDoc65 with help on this part, since they seem to know a bit more about Macs than I do.
Anyway, I'll see if I can find any other cause for your DVDs not working. Don't give up! :3