Internet Explorer 8 Video :
How To Change the Pop-up Blocking Level

Step #1: Click on Tools in the top menu bar.
Step #2: Click Pop-up Blocker.
Step #3: Click Pop-up Blocker Settings.
Step #4: Select the appropriate blocking level from the Blocking level drop down menu.
Step #5: Click Close.

Result: The pop-up blocking level was changed.

This action allows you to set the aggressiveness of blocking pop-ups from completely blocking all pop-ups, most pop-ups, and allowing pop-ups from secure sites.