John, this sonds the same as installing a 220v stove or dryer outlet. The double pole breaker and the wiring should be the same but you may need to change the receptacle to fit your needs. You might find something in this site http://www.electrical-online.com/how...HowToIntro.htm
I had to check it recently to refresh my memory on installing 2 way switches.
Edit - sorry I just checked this link and there is only 110V outlets mentioned