Problem with Superdrive? (I doubt it)

Hi folks, newly registered but longtime reader. I have a problem with my mac and I'm hoping I can get some help here.

I have a 17" Powerbook 1.67 GhZ PowerPC G4, Mac OS X 10.4.8

I should be completely updated on all of my software and patches.

I'm not sure how or when my problem occured, but I am not able to play DVD's! I can play and rip CD's and install software from the CD drive, but a message pops up when I put in a DVD that says the disc cannot be read.

I took it in to "THe Mac Store" (not sure if that's natioanl or not... it's like a bootleg Apple Store, but I think is officially Mac certified and what-not. They sell Apple products and fix the cimputers), and the guy looked at it and said it would be replaced. They put in a "Drive, Super Drive, 8x, Slot Loading".... ~$500 product. It was checked out, as verified that it works.

It doesn't. I can still install software and I'm guessing that CD's still play, but I couldn't get a DVD to play. It didn't even allow it to open.


Are there any settings that I can change which would allow DVD Player or something to open? I'm trying to think if I did something with Quicktime, iTunes, or DivX that disables DVD Player.app and doesn't work with DVD's, but I can't imagine that I did. Now I have a new Superdrive, but still no fix.

Any suggestions? I'm a student and it's nearly impossible for me to continue to take in my computer. The Mac Store had it from last Friday to today, and I was in a bit of a pickle on a few assignments without my computer. I don't want to take it back in, especially because it doesn't appear that those guys no any more than I do, judging by the fact that it still doesn't work.

I'm hoping someone here knows better.

Thanks,

Michael

 

They don't mount on my DT (if my mount you mean show up). All other types of CD's do, but DVD's just display an error message where i can ignore it (and not find it on a drive or on my desktop) or eject the disk.

 

Clearly they didn't do something right, and I doubt that they tested it with a DVD. I guess I'll take it back if there aren't any other suggestions.

Is there any more information that i need to give in order to get more accurate help?