my mackbook pro 15" dvdrom does not detect a windows 7 installer disk as I would like to creat a partition using boot camp. what should I do?

I Am trying to install Windows 7 using Boot Camp, with an Original Win7 Installer disk. However, the internal superdrive DVDrom does not recognise it at all. Needless to say that it DOES read every other Mac oriented cds . How can I fix that?

I also tried using an external DVDrom (which everything went fine , I could manage to create a partition and download the updates drivers to a USB as the instructions were telling me to, it worked up until the point that after creating the partition the computer restarted and all I saw was a black screen), there for I have decided that I should try and see why the internal DVDrom does not even read the Win CD. Please help me!