To develop and test dynamic web pages, you need a web server. A web server is software that serves web pages in response to requests from web browsers.
Make sure Microsoft IIS is installed and running on your hard disk or on a remote Windows computer. (Macintosh users need to install Microsoft IIS on a remote Windows computer.) A quick way to check whether IIS is installed on a computer is to look at the folder structure to see whether it contains a C:\Inetpub or D:\Inetpub folder. IIS creates this folder during installation.
If IIS is not installed, install it now. For instructions, see Installing a Web Server.
After installing the web server, you need to install an application server. (See Installing an ASP application server.)