if you need to show a website during your presentation, often a screen grab will do it. But if you need to show interactivity and functionality, you’ll want Shyam Pillai’s LiveWeb plug-in for PowerPoint, one of the few add-ins that has been properly updated for PPT 2007.
LiveWeb allows you to create a window of any size (including full-screen) right on your slide that will show any website you indicate. In effect, it’s a mini-browser window that eliminates the need for exiting your slideshow to go to a browser or having that browser pop up on top of your slides via a hyperlink.
The best part though, is that LiveWeb is truly just a window, without any browser toolbars, so it shows just the site itself, and nothing else distracting. And since it can be any size, it incorporates itself right into your presentation design.
Two caveats: obviously, you need a live internet connection for LiveWeb to work, and it will only work on computers that have the plug-in installed.