If you are going to use the 770 for any period of time - especially if you are using HWR, get a stylus pen. There are many of these now available from the major ink pen companies, and they can be found either in the electronics section or in the stationary section of many retail outlets.

Since I have had more of these type gadgets than I can remember (Starting with the original Apple Newton), I have dozens of these around.

DO NOT use a pen with the cap on or any other device that is not specifically designed as a PDA stylus. Screen scratches can result.