[Dx4win] Setting up CW Keyboard

[Douglas Frame]

I would like to set up the CW keyboard function in DX4WIN (ver.7) but  
have not been successful so far.

My radio is a Kenwood TS480SAT and I have a serial port connection  
from the computer which is functioning properly, using a USB to serial  
port adapter.

I operate both psk31 and MTTY which are interfaced from the computer  
sound card to the digital input jack on the radio. I key the  
transmitter with VOX.

I have read the DX4WIN Help info and have tried different combinations  
of Setup Parameters in the Preferences>CW window but none will key the  
radio from the keyboard.

Is there an easy way to do this or do I have to set up a second com  
port and connect it directly to the key jack on the radio?

Any help would be appreciated.

Thanks, Doug VE3JDF