Fusion to Bootcamp question?

I installed Windows 7 on Fusion and want to install it on Bootcamp, and now realized that I should have installed it on bootcamp first.

Is it possible to use the current Windows fusion installation to run bootcamp from? or do I need to partion bootcamp and do a complete reinstall of windows?

Pretty much wondering if I'm going to have to have 2 separate Windows 7 installations?

Thanks