The first thing you want to do is to do a Hard Reset on the used PDA that you bought as a replacement. To do that follow these steps:
1. Hold down the power button and then depress the small hole in the back
with the tip of your stylus.
2. Continue to hold them both in until you
see the Palm logo.
3. Let go of both of them and then follow the onscreen
directions. You will want to answer yes and use the 5 way navigation
button on the bottom of your pda
and hit up so that is completes the reset. After that you will have to
set up your touch screen and go through the tapping the target. After
you have gone through all this then do a hotsync
. It should clear up your problem. Best wishes.