I got it to do it. Used NTune.
All you need to do is right click on the desktop, select NVidia Displays, and select the particular display you want to change. Changing the resolution iin this manor works on only that display, rather than if you just opened it from the Display box, or the Toolbox.
Maybe that will help someone else.
The TV/CRT combo is pretty neat. I can watch a movie on the larger TV screen (it will be even better when I can get Nero to properly rip my DVDs), and do pretty much anything on the other. For some reason, I cannot play complicated games and do something else on the other screen: perhaps because the game is taking up to much of the Video Cards resources. I'm going to tinker around with settings: perhaps if I lower resolution, it will work.
Thanks for everyones inputs.