Problem installing Windows 7 for Bootcamp

I had bootcamp on my macbook pro (snow leopard) before and i had to format everything so this time i am trying to do it again but i run into problems

I have partitioned the drive for bootcamp, i have my windows 7 on a disc and when i restart my macbook it will boot into the windows installation process thats on the disc, it gets to the stage where it asks me for the drivers which are located on my Snow Leopard installation disc (because as far as i know you cant get them anywhere else for Snow Leopard)

The problem is, i cant eject the windows installation disc at this stage, it asks me to do this to continue and insert a disc with the drives on it, i would love to but the disc will not eject its driving me bonkers, is there any other way to force eject the disc? Or is there a way i can get the drivers from the snow leopard disc onto an external?

Appreciate any help
Thanks

You don't install any drivers during the installation. It's only once you've completed the Windows installation do you add drivers.

Which stage of the setup are you at (as per attached)?
Boot Camp: Installing Windows 7 Frequently Asked Questions

And what do you mean by 'on a disc'? Is this an .iso you have copied to a DVD, or the original Windows CD?