Here's how it works - you can set it up to boot Windows and you can set up Windows to boot CF. Done.
The only question will be whether or not the sound card or unusual peripherals will work under Bootcamp. In general, the answer is -if they work in Windows they usually work in Bootcamp running Windows.
The system will startup and shutdown with the P1900 as you desire.
Essentially, what you will have is a Windows system. All solutions and configurations after setting up Bootcamp for Windows can be found in Windows forums.