Finally, the data on my old Palm Treo 680 are sync'd to Google Calendar!
I had tried to send them through Bluetooth, but the new Android phone, Moto Defy, does not like to accept it. The tranfer is done by installing Outlook 2003 first. Install the original Palm Desktop from Treo 680 and let it sync with Outlook. Finally, use the tool kindly provided by Google to sync Outlook to Google Calendar. Boom! The data are copying to the Cloud.
