Sending keystrokes to a DOS app

I have a DOS app that, under certain circumstances, I want to send a "Ctrl-Q" to the app (forces the app to quit) and then issue a WM_CLOSE message to exit the DOS window.

What API call exists that will allow me to send "Ctrl-Q" to this DOS app? VB's SendKeys() doesn't allow keystrokes sent to a non-Windows app. Is there a valid API call to do this?

Thanks,
Mike