FTP Server w/ Web Admin – Where?

Good morning, all!

I am looking for a solution to allow employees to fill out a web form on our intranet and have that web app create a user/pass/virtual directory based on their submitted credentials.

How do I do this?

I am using a Windows 2000 box (Not Server Edition) that sits on our DMZ and is not a part of our domain. I was hoping IIS might be a possibility.