CREATE THE APPLICATION POOL:
Open IIS, and right-click on the Application Pools folder, and select 'Add Application Pool'
Name your application pool and click OK:
Then, right-click on your new application pool, and select 'Advanced Settings':
In the Advanced Settings window, click the browse button next to the default Identity:
Select 'Custom Account', click 'Set', and enter the user information you created earlier:
Click OK several times to close out of all the windows.
Now, add your web site in IIS (or modify your existing site if you have already created a site)
ADD NEW WEB SITE:
Enter your site details, and then click the 'Test Settings' button to test:
and ensure that all tests pass:
SET NTFS PERMISSIONS
You now need to provide the IUSR user created above with permissions to the web site folder. Browse in your hard drive to the folder you created for your web site, right-click the folder and select 'properties'
Click the 'Security' tab, and click 'Edit'
On the next screen, click 'Add'
On the Select Users, Computers, Service Accounts, or Groups window, click the 'Locations' button:
CLICK CANCEL if you are asked to provide credentials:
and on the next screen, click on YOUR SERVER NAME, and click OK:
Now in the Select Users or Groups window, type the username you created earlier and click OK:
Make sure your IUSR user is selected. You can add write permissions if needed, but otherwise to accept the default settings, click OK:
Click OK on any remaining windows to close out of the settings.
You have now configured a web site identity user, application pool, and web site.