In some versions of Internet Explorer you can shut off the pop-up blocker by going to Tools > Pop-up Blocker > Turn off Pop-up Blocker.
Click "Show advanced settings" at the bottom of the screen
NOTE that you may have to scroll down to see the advanced settings.
Click the "Allow all sites to show pop-ups" radio button under "Pop-ups"
Note that you may have to scroll down to see the Pop-ups options.