Using an attribute value to output a graphic in FOSI

We are using Arbortext Editor 6.1 M020. We are beginning to use MathML instead of ATIMath. We are using MathFlow 2.0b for Arbortext as our equation editor. I am creating a FOSI that will allow our copyeditors to produce a very lightly formatted manuscript (PS or PDF) for internal QC purposes. An example of an equation is:

<disp-formula id="df1" medium="all">

     <mml:math altimg="C:\Users\rschoen\AppData\Local\Temp\MMLIMG2768143.png" display="block"> ...

     </mml:math>

</disp-formula>

Since MathFlow has already created an image of the equation for us, I would like to have the FOSI use that to produce the output manuscript. I would like to grab the value of the altimg attribute of the mml:math tag and have that image displayed in the output but I'm not sure whether that is possible. And, if it is possible, how to go about doing it.

Can anyone help?

Thanks,

Rick Schoen