Thanks to Walter Lederer for the tip: Microsoft has reissued the Internet Explorer 4.0 PowerToys due to problems with the original batch. The new PowerToys have been thoroughly tested and Microsoft recommends you replace the old versions.

The Internet Explorer 4.0 PowerToys include: Zoom In/Zoom Out, Image Toggler, Text Highlighter, Open Frame in New Window, Web Search, and Links List.

For more information about the Internet Explorer 4.0 PowerToys, please visit the IE 4.0 PowerToys Web site