In the Eclipse Helios (currently 3.6.2) I found very useful the use of another window to bring up multiple documents in different screens.
in the main menu, go:
Window > New window,
and drag it to the screen you prefer. Double click in the filename on the editor and will maximize the editor’s window.
I hope i helped.
Kyr.
PS: If you want to maintain both windows when you closing Eclipse, don’t close them one by one. Instead go: File > Exit.