Need help with partitioning/dual boot mac osx/win7

I happened to not label my isos and stuck in snow leopard before partitioning the drives. I have 2 x 500gb's. I cannot eject the DVD from the cd tray or boot from old drive as it's corrupt. I can still boot from the snow leopard DVD but I cannot seem to boot after installing it. Raid fails. Do not post unless you actually know what you are talking about and your post directly relates to fixing my problem. All other posts will be reported.