In article .com,
says...

This is probably not that complicated (I hope?!?) but I need a PC
program that would just tell a PC soundcard to generate a standard
CTCSS tone (example 107.2 Hz) sinewave that could be fed into an older
FM amateur transceiver. I don't want to find/buy/build a CTCSS module

snippety

What you describe is a lot like using a 40mm antiaircraft gun to
shoot down a rubber-band powered model airplane. What happens when you
suddenly need to use your sound card for something other than a PL
encoder?

$28.95 plus a little for shipping will get you a perfectly usable
dedicated CTCSS encoder, as described at this link:

http://www.com-spec.com/ss64.htm

PC's are not, contrary to popular belief, the Answer to All Things
Radio or Technical. This is one area where a dedicated purpose-built
device would be a much better investment of your time and money.

Happy tweaking.

--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"