The boot image to use with the ntdlr is dependent on your install. Assuming your going to install via CD.
When you get to the boot loader step do not install to the MBR but the /boot partition.
Reboot the 1st install CD and boot rescue mode.
enter the command:
Create the boot image per the instructions in the following link.
Reboot to windows and follow the instructions for modifing the boot.ini file.