Can’t make WIN2k recognize entire 4 G HD

I have a computer with a 4 gig HD that was already partitioned into 3 partitions when we installed WIN 2K. How can I make WIN2k recognize the entire HD as a single partition? WIN 2K recognizes its own partition and the “free space” that is not itspartition, but I want the entire 4 gigs for WIN 2K.

Thanks.