Windows 2000 Professional Installation

If you have a five gig hard drive that has only one partition (751 free MB), is it possible to partition the free space (create a drive d), so you can install Windows 2000 Professional on it rather that performing an upgrade or a clean install? The reason is because I am unable to work around it.
Note: I don’t want to fdisk the entire drive and lose any information.
Please provide suggestions.

Thanks!