If you are actually IN Win2K, go with what zzzz says...
If you want to do this outside of Win2K, use Linux Fdisk!! It rocks, is very informative and easy to use!!
MMC also works, but that is assuming you are in Win2K, in which case zzzz's suggestion works also!!
Unless of course you want this drive to be your boot drive after the repartitioning! In which case, a third party S/W will work (like PartitionMagic), Or simply put that new drive as the first boot device and re-install Win2K. It will see it as the first drive, and allow you to partition it any way you fancy!!
Good Luck,
Edblor