Can I embed the synth into my powerpoint?

Not directly, Breezest, but there are a couple Powerpoint plugins that might accomplish what you need. LiveWeb http://skp.mvps.org/liveweb.htm and T'dog http://www.tdogsoftware.com/ have tools that can put any web page on a Powerpoint slide. I tried one here in LiveWeb and it worked fine (although it was the entire Photosynth page, not just the iFrame embed to it). Having said that, I have always been a fan during PowerPoint of having a browser open separately and using <alt> <tab> to toggle between presentation and other content. This avoids the problem of having a bad webpage or other problem crash my primary presentation, and I think it generally looks seemless enough that it shouldn't cause much of an issue.

I guess ithis might be obvious also, but you could certainly just hyperlink text or even an image screenshot of your synth in Powerpoint and have that launch IE separately. I'm guessing from your post though that you want it truly embedded for some reason. In that case, I think the two tools I mention above are probably your best bet.</tab></alt>

Gabriel, you may have long since discovered this but you can replace "view.aspx" in your synth's URL with "embed.aspx" and get just the synth for your presentation rather than the whole page.

David, I tried modifying the instructions in Powerpoint's help file for embedding a flash file in a slideshow (as far as adding an ActiveX control via the 'Developer' tab - I used Photosynth's rather than Flash's, naturally) and I can get the viewer to load but then some sort of exception is thrown and if I move off the slide and then come back to it I am given the "Sorry, we wish ... but obviously..." message. Moreover I don't understand where to input a URL for the viewer to point at so for the time being the third party options for embedding a whole page seem to be the most promising option.

Any suggestions from those who are saavy with Powerpoint would be welcome.