PowerPoint LiveWeb can be a tremendous blessing for anyone who works with PowerPoint presentations. It lets you add web pages to slides. These aren't static snapshots of the page. They serve as a simple web browser right on the slide, and the page is automatically refreshed every time you visit the slide. You can even interact with web-based forms or applications.
Without this add-in, you'd have to manually insert a web browser control and write code to update the pages. LiveWeb requires no coding. It can also work with web documents off your local drive.
It works with PowerPoint 97 and all the way up to PowerPoint 2010.