Thanks, Robert!
So I now have another question. I realized that I can't use the widget I linked to above because I'm not using the Flex viewer. I currently have a map point being displayed through a feature layer. This point marks the location of a webcam. I want to be able to display the streaming video from this webcam (via the Flex iFrame) in an InfoWindow when I click on the original webcam mappoint.
I'm having a hard time figuring this out. There seem to be two ways to define an InfoWindow (as either an InfoWindow or an InfoSymbol), plus various other ways to define the way data is going to be displayed within that InfoWindow (InfoRenderer, InfoWindowRenderer, InfoWindowContent, etc.). Can anyone suggest the best way to do this, or point me to another helpful example?