The major problem here is, that screen uses its own scrollback history,
and that your xterm/whatever program does not see that history because
screen always updates the visible screen with the new data, rather than
adding lines. So the question then is, how can you access screens
scrollback history? Simply put, the answer is Shift+PageUp/Down, but
most XWindows Terminal Emulators already bind Shift+PageUp/Down to their
own scrollback history, thus making it diffilcult if not impossible to
access screens scrollback within them.If anyone knows a way to
circumvent this problem, let us know! A terminal emulator that allows
scrollback rebinding even... or a way to get screen to use other keys.

-- 
--Eric Andresen
  ndiin@asu.edu