We need to download and install WebPI5.0 first. You can download it from the link below.
After you install the WebPI, let's open up the hosts file that is located "C:\Windows\System32\drivers\etc\hosts" and add entry for our first domain name. I will call the first site as metallica.com. Save and close the hosts file.
Start WebPI and type wordpress in search box and Click Add button for Wordpress.
Make sure you choose wwwroot as Physical Path. Therefore, WebPI will create the new web site's folder under wwwroot.
You can just skip the window below or enter authentication keys and salts. WordPress security keys are made up of four authentication keys and four hashing salts (random data) that when used together they add an extra layer to your cookies and passwords. You can use the link below to generate those keys.
Database, DB Username and Password will be generated automatically.
After you click Finish button, wordpress setup start page will pop up.
After you completed worpress setup phase, you need to open IIS Panel. Right click on your new site> Manage Web Site > Advanced Settings
Change the Physical Path for your new site.
You can basically follow the same procedure for the other sites and host them on the same server.