Can anyone recommend the best way for multiple users on Macs and PCs to see a calendar schedule online using either a web based interface or a client application) and to be able to add or edit appointments, see the changes reflected in real time and than be able to sync the new appointments to the Treo 650? Any appointments made on the Treo 650 need of course to be Synced to the online scheduling system, so others can see them. The Treo can either be connected to an online Powerbook with USB (or Bluetooth) or it can go online using GPRS/EDGE connection.

Our Oracle Calendar system is not compatible with the Treo 650. That system could only update the calendar on the Treo (600) by using the USB connection to the Powerbook, it did not support direct GPRS syncing anyway.