John S wrote in :

Also try EZNEC. They both use the NEC engine but EZNEC provides a
different interface to the modeling.


Already did. EXNEC v5 demo. I really like the first impression I get, Runs
on all Win32 (very respectable), and I like the way I can grab the 3D plot
and rotate it like a SketchUp image to get a proper look at it. I mentioned a
laser beam tool (called PSST) that graphically models laser cavities, hoping
this EXNEC might be an antenna maker's equivalent. It is. It will take me
a while to understand it though.