Excel 2003

Often when I copy something a window comes up on the right hand side of the
screen showing my clipboard with the most recent copy commands & gives me
the ability to paste any of them. This sounds great in theory but I need
the screen real-estate. How do I turn off this function? Also I get a
warning when I enter the number one in a text formatted cell, I would like
to turn this off also. I have looked under options but can't seem to find
the right command.

Thank in advance... Bob