If you are using a Treo 650 from Sprint, you may need the 1.12 (or higher) ROM update from Palm, to fix the digitizer problems. Without this update, lines drawn on the screen of your handheld will not be smooth, and MobileWrite will not work well. It was made available from Palm on June 16, 2005. Further information and downloading information can be found on the Palm site, in the Support area. A link is provided as a convenience:

http://www.palmone.com/us/support/downloads/treo650updater/sprint.html

If you have any questions, contact Palm support.