Unplug the bits
The reason the Mac wont boot is usually because a USB or similar device is causing the flakey EFI->BIOS portion of the boot sequence to not function correctly.
If you get the whole black screen on boot thing, either from the Windows install CD or after it has put the base files on the HDD. try these three things.
1. Unplug every USB connection to your Mac save for the keyboard and mouse.
2. Do not try and boot to a FAT32 device (USB or HDD)
3. Make sure you have cleared the PRAM (command+option+P+R)
lastly, try installing rEFIt to give you a decent bootloader instead of having to worry about holding down the option key at boot.
The reason the Mac wont boot is usually because a USB or similar device is causing the flakey EFI->BIOS portion of the boot sequence to not function correctly.
If you get the whole black screen on boot thing, either from the Windows install CD or after it has put the base files on the HDD. try these three things.
1. Unplug every USB connection to your Mac save for the keyboard and mouse.
2. Do not try and boot to a FAT32 device (USB or HDD)
3. Make sure you have cleared the PRAM (command+option+P+R)
lastly, try installing rEFIt to give you a decent bootloader instead of having to worry about holding down the option key at boot.