Dear drBlacksnake and others who are interested:
I found out the technique to convert geometry to a brush stroke. It has nothing to do with .pfx format; rather it is just a procedure chosen from the Rendering>Paint Effects menu.
The help file is located at:
http://localhost:4448/Maya6.5/en\_US/Painti...onvert+to+Brush
and the method is Rendering Menu>Paint Effects>Curve Utilities>Attach Brush to Curves. There are options to choose from by "getting" a specific brush before you perform the operation. The help files detail how to do this.
Hope this helps anyone in need.
-penciline