Incidentally, this process will take you roughly 30 minutes. If you don't already have that NTFS partition, you'll need one - either make room and repartition/reformat or get Partition Magic and repartition so you can make one.
The data in active directory should be kept in a separate physical drive than the logs for maximum performance, but with only 6 users it really won't hurt you.
I suggest doing this first thing in the morning with a cup of coffee and the newspaper handy. Do some mild finger-limbering exercises so you don't strain the clicker finger.
Then run DCPROMO and follow the prompts.
If you'd like to be able to "play with active directory", there's a way. SmartCertify has a Windows 2000 Active Directory Setup course you can demo at no cost, and is very thorough. It'll let you actually go through the steps of setting up DNS, setting up your forest, promoting your server role to that of a PDC, give you all the caveats, all without breaking a single thing.
If you're interested in taking their courses, give them a call, very reasonable prices. I spoke to them recently about doing a bit of training myself (gotta stay up on this stuff). Gentleman there by the name of Rob Miller - great guy. Ask for him, he'll treat you right. And their training is top-notch - I know I'll definitely be sending subordinates through their program in the future
And if you do call him, tell him I said hello
