Here is a bootcd I put together.

It's an .iso so just burn it on a cd or dvd at the slowest speed.

Remember to either have a snow leopard restored on a usb drive or have an actual snow leopard 10.6 disc.

Boot from the bootcd. once at the bootloader take out the cd and insert the dvd or if you have an usb select that (be sure to plug it in before boot).

http://www.mediafire.com/?q4nizy0ftty

Let me know