iMac Keeps Ejecting Windows 7 DVD

Hey guys, I've been working at this problem for two nights now... I'm trying to install Windows 7 Ultimate on my 27" iMac. Currently, it has OS X 10.6.8. I have the same set up on my Macbook Pro. I used Bootcamp Assistant on the Macbook to easily install Windows. When I try and preform the same thing on the iMac, when promted to by Boot Camp Assistant, the Windows 7 DVD get ejected immidiately (after being spun and read for a few cycles). I know the drive is 100% fine as it reads DVDs with multiple data images on it, movies, pictures, etc. Also, I installed rEFit to see if I could get a direct boot prior to OS X opening up in-case there was a software issue leading to my problem - but unfortunately, since I dont have a directly connected keyboard, I cant "press any button to continue." I'm all out of ideas as to what could be causing this problem...


Thanks in advance,

Lokk

Also, even when not in Boot Camp - the iMac wont recognize the disk as anything, it is simply ejected...

I'm putting money on the drive...