stop outlook from turning off reminders when due time passes

[King's kid]

I've seen several questions online about how Outlook brings up all your
reminders at once when you get home from being gone for a few days. I have
the opposite problem. As soon as a reminder comes due Outlook turns it off
and I can't find out how to change that setting. I do all my calendar
management on my Palm Centro so this causes me problems when I sync because
it tends to create a duplicate entry and I then have to go in and delete the
ones it duplicates.

Any ideas on how to turn off that setting?

Thanks