When I import a graphic (.png file) whose background shows as transparent everywhere else (Word, Photoshop, InDesign), it becomes opaque and covers everything underneath it. I've not had this happen before until recently and can't find a setting that appears to need to change. Any ideas?
FrameMaker imports graphics with the background set to white by default. First try selecting the graphic and set the Fill to None. If this doesn't create the desired effect on output (the internal rendering on screen in FM may not show the proper effect), then try using one of the approaches in the tutorial that Jeff mentioned.