palmOne TREOTM TreoTM 650 Using Manual page 181

I have duplicate entries in Microsoft Outlook after I sync
1. Open Microsoft Outlook and delete the duplicate entries.
2. Manually enter any information you've added to your phone since the last time
you synchronized.
3. Go to the conduit dialog box for the affected application, and select Desktop
overwrites handheld.
4. Synchronize your phone and your computer.
5. Go to the conduit dialog box you selected in step 3, and select Synchronize
the files.
My appointments show up in the wrong time slot after I sync
If you're using Microsoft Outlook:
1. Make sure that you installed the Microsoft Outlook conduit that came with
your Treo 650. If you're not sure whether this software is installed, reinstall it.
2. Open Microsoft Outlook and correct the wrong entries.
3. Manually enter any information you've added to your phone since the last time
you synchronized.
4. Go to the Calendar conduit dialog box, and select Desktop overwrites handheld.
5. Synchronize your phone and your computer.
6. Go to the conduit dialog box, and select Synchronize the files.
You should now be able to assign time zones to your events without encountering
this problem.
If you're using Palm Desktop software:
1. On your phone, press Calendar
2. Open the menus
3. Select Options, and then select Preferences.
4. Uncheck the New events use time zones box (if it's checked).
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Synchronization (HotSync) :: 179