FYI, on Outlook XP, the "show end times" feature only works if your
screen is wide enough to accomodate the extra width Outlook requires
for the end times column.
That is, if your Outlook calendar window is too narrow, even if the
"show end times" box is checked, end times will not display.
Unfortunately for me, my 12" laptop screen is not wide enough for
Outlook to show the end times.