I'd like to add the following note to what Thomas said in http://www.adobeforums.com/webx/.59b4c193/0.
FrameMaker supports transparency with EPS (that is, areas where there are no objects are transparent).
However, FrameMaker does not support that same transparency with Illustrator CS3 files. I had to save as CS EPS to get a PDF to display what was behind the vector in question.
Here's Thomas' advice:
1. Create your icon as an EPS (from Illustrator or CorelDRAW)
2. Place this in FM as Inserted by Reference
3. Make sure that you set the fill and outline properties of the EPS file itself INSIDE FM to NONE. [NOTE: I also did this for the frames involved.]
4. You can then place this EPS file on any background and the transparency will be apparent.
Number 3 is the important step. It is not enough to use transparency directly in you EPS file. The EPS file can also derive from Photoshop with a Clipping Path embedded in it.
keep smiling