OPTN figuring out margin requirements

[Edwin J DeGuzman <edwindeguzman@xxxxxxxx>]

I need to determine margin requirements (both initial and maintenance)
for portfolios containing covered calls, spreads, combinations,
strangles, short put and short the underlying (i.e. covered puts), boxes,
conversions, etc.

Instead of doing it by hand, I'd like to get my hands on a program to
automate the process.  (I have the SPAN program for futures options, and
it's OK, but I'm not too thrilled with the author's idea of
user-friendly.)  You would think someone would want to build a shareware
program (or even an overpriced, overhyped retail program) for this kind
of stuff, but I haven't found such a thing.  Does anybody know of one /
have one / use one?

Ed