If you have created a presentation using the Prezi zooming presentation package, embedding is very easy with PBWorks.

1)     Go to the Prezi website and create your presentation.

2)     Save your presentation check out the sharing tab.  You want to make sure that everyone can see your presentation.

3)     The link to your Prezi is provided in this display.  Note the name of the Prezi and you'll use <iframe> to put your Presentation into the PBWorks page.  A sample appears below.

<iframe width="850" height="640" src="http://prezi.com/piwmfmxri0v7/view"></iframe>

4)     Voila!