Ashhar Farhan wrote:

David Stinson wrote in message ...

I need a Windows-compatable program or TSR
(can be DOS, as long as it will run on a Windows machine)
that will give me an open audio channel, sound card to sound card,
from one internet-connected computer to another.

http://www.speakfreely.org/
it is free, comes with source code and is GPL-ed.
the voice quality is really excellent and
it has choice of codecs to choose from.

Try Freetel as well.

Rob