Hello Chrissy,
This is Kevin from Palm. As Jeff suggests, recalibrating the touchscreen would be the first thing to do. If there continues to be an issue, here are two more troubleshooting steps, taken from the Palm Knowledge Library article
"Calibrating your touchscreen (digitizer)":
Do you use an adhesive screen protector? A screen protector which is trapped under the screen edge may interfere with touchscreen calibration. Occasionally, just having the screen protector on the screen can cause the issue. Try removing the screen protector.
You may have debris trapped under the edge of the screen. Use the corner of a piece of thin, stiff paper (copier paper works well) to very gently slide all around the edge of the screen. Don't let the corner of the paper travel more than an eighth of an inch under the screen edge frame. By doing this, you may be able to dislodge small particles of debris trapped under the frame.
Sincerely
Kevin