Hi Larry,
You might want to review OneCNCXR Mill Express.
http://www.onecnc.net/products/products_index.htm
This should permit you to machine either simple stick fonts, or raised relief fonts. Other wireframe shape machining will also then be possible for you.
In the past, I used a very simple to use, but dedicated engraving program, called MillWrite, developed by Endpoint software. I haven't kept up with the progress of this software any longer, but I think it has evolved into more than engraving. It might allow more artistic licence when creating artwork for machining, too.