Not sure if I totally understand what you mean.
With dual monitors, one of them is the primary display and will have the Dock and Menu Bar. You can move this to either one of the monitors using the System Preferences: Displays: Arrangement. One of the two monitors has a white menu bar along the top edge. You can drag that strip from one of the monitors to the other to set the primary display.
Not sure if your application will follow the same convention with all of it's toolbars as the Dock and Mac OS Menu bar.
thanks guys but it doesn't move.
.. in photoshop for instance, I can move around the palate windows and the toolbars and the canvas window but not the main strip across the top.
same thing with FCP.
It should move. I can hardly believe you are doing it right.
This is not called a toolbar by the way, but the menu bar. It's system-wide, it's there for all applications (only the content of it changes when you switch apps), so the settings for this bar you find in system preferences.
You aren't trying to move the menu bar itself are you? You have to drag the representation of it!
You have to go into system preferences, click on "display" and then on the main screen (your left 19" screen) you have an "Arrangement" tab, in the middle, between "display" and "color" tab. Underneath there's a visual representation of your two screens. That's were you move the menu bar as indicated by the red arrow, in the picture I posted above.
Drag (=click+hold, drag, release) the white bar on the left, to the top of the right screen.
(not the actual screen, the representation of that screen in the system preferences window.)
When you have done that, your right side 24" screen will be your new main screen, the left will be the secondary screen. Next time you open display preferences, the arrangement tab will be on the right.
You can also grab the entire screen and switch their positions, put it higher, lower, to mimic the real-life setup of your screens, so when you cross screen-edges with your moise-pointer, the transition feels natural.