I googled this and found there are ways to get that info to google calendar. Yes, the Palm calendar app was pretty good.
Also I wrote PalmOS apps so to write there is no way is to dismiss those that do this today.
-> And about the battery, did you check pdaparts.com or amazon.com?
Last comment: Be sure to Hotsynce before you do the battery change.
I have had a fabulous Palm Tungsten C since 2004. I have kept my own medical information on the Palm calendar which is the easiest to use and is great as an alarm. The battery will not take a full charge anymore, and this medical data is crucial. The information cannot be migrated to my Droid, which does not have the calendar/alarm features of the Palm. Since Palm is now part of HP, is there a way I can have an updated battery installed in this Palm Tungsten C?