Macbook Pro won't recognize windows vista dvd
I just bought Leopard and a new copy of Windows Vista Home Premium to install on my Macbook Pro. Leopard installed fine. Had some issues partitioning (had to get the right size b/c of unmovable files). Anyway, i made a 27gb partition to install my Vista. However, when I put my install dvd into the drive, it spins, makes a funny noise, then asks for the install dvd. After it spins the dvd some more, it spits it out. It doesn't seem to recognize the install dvd. I've put the Vista dvd into my PC and it runs fine. I would greatly appreciate any and all suggestions.
Thank you.
Macbook Pro, Mac OS X (10.0.x)