One small problem with Advanced Voice client

Hi Everyone:

I been using Advanced Voice client now since it came out and just love it.
I program the Right Control key on the keyboard to key the mike so I can
talk to ATC. Everytime I key the mike using the right control on the key
board I get a loud beep. Is there a way to stop this beep. Its very
anoying and its loud.

If somebody knows how I can cure this little problem I would appreciated
very much.
Keep on Flying.

Don LeB
New Brunswick
Canada.