Yes, you can do it in Vegas. I tried it sometime back, didn't care for it. All you're really doing is expanding your desktop. So you can undock and drag stuff over to the second monitor.
In Vegas you can setup the preview window to play full screen on a regular TV with video In, if you have a digital camera/convertor box/firewire. Its been a long time since I used VF, don't remember if they have that feature which is really a must for serious editing.