calendar.google.com/]] for gmail users.
Kontact/KOrganizer can use to read the calender created in Goo... mall dialog will pop up, copy the URL given.
In KOrganizer, click add resource, select Calender in Rem... of calenders, yet.
I found a way to export from KOrganizer to Google Calendar, however it has to be done manually each time.
In KOrganizer: File --> Export --> vCalendar (You can try
