Thanks for the quick reply - I have a CW Touch Keyer (self contained unit - stand alone). Roger on an easy build - but, I don't have access to all the tools (soldering iron, etc.) that I would need to put something together.
By electronic key, do you mean an actual external electronic keyer or a set of paddles?
If you are referring to a real external keyer, all you need is a small project box, a DPDT switch, two jacks to match the connectors on the keyer and straight key, and a cable and connector to match the one on the rig. Wire each side of the switch to one of the jacks and the center contacts to the cable to the rig - major a 20 minute project.
If you are referring to a set of paddles, most modern rigs have separate jacks for a straight key/keyer and a set of paddles.