Internet Explorer 8 Video :
How To Setup the Trusted Sites Security Level

Step #1: Click on Tools in the top menu bar.
Step #2: Click Internet Options.
Step #3: Click Security tab.
Step #4: Click Trusted sites.
Step #5: Click Default level.
Step #6: Click on the slider under Security level for this zone to a desired level.
Step #7: Click OK.

Result: The trusted sites security level has been setup.

This action allows you to control your computer's security while browsing the internet by allowing you to increase or decrease the security level for trusted sites.