Personal Web Server (PWS) is for Windows based operating systems only. What it does is allow you to run Active Server Pages (ASP) from your personal machine. You can test them without actually having to upload them to a server that supports them. This is great for just testing purposes OR just to try asp out before you invest the money into a web hosting company that supports ASP. As far as I know, if you are on a Mac you will need to upload your ASP pages to a server that can host and support them in order to test them out.
- You can download PWS from this link (Windows NT Option Pack):