Unlike some years ago when web sites were almost exclusively static, the standard today is to have a feature-rich, dynamic website. Not everybody can create this kind of web site from scratch though, so the most convenient solution to have a dynamic website is to use a script application. A lot of website hosting companies offer script installers you can use to add this type of an app for each of your domain or subdomains, so you'll not have to set up anything manually. The key advantage of using an installer tool is the fact that the scripts are available to use in a couple of minutes and the copy which will be set up is already with the settings needed for it to run the way it should on the particular hosting web server, so you'll not have to change any script or account settings. This way you can quickly create one with just a couple of mouse clicks even though you may have never had an Internet site before.