Be careful when you partition. Try to back up everything you can before re-partitioning your hd. In your re-partitioning, you will be asked to make an extended partition and then logical drives, since you only have 1 primary partition now.
I believe if you use FDISK, you may loose all your existing data.
Don't know for sure but this is why others may direct you to other software to make this partition.
After you create (recommend making 2 partitions, one for your operating system(w2k) being 2.0 or 2.5G size and the other to take up the rest of your drive space. You will have to go into windows and format the new partitions (fat32).
Then use your W2k disk to install W2K to your new drive (D

.
You will automatically have a dual boot choice when you boot up.
Reinstall your applications to the same location they were previously if you like.