The calendar application is available only for Outlook 2010 and later. No versions of this module are available for Outlook 2010 and older. A good alternative to the Outlook Calendar is Google Calendar or Yahoo Calendar. You can access both of them using the links below:
Google Calendar: http://calendar.google.com
Yahoo Calendar: http://calendar.yahoo.com
However, from my personal experience, the Outlook Calendar module offers the features you have mentioned above and it's commonly used among users who work and need to sync their data. The Google and Yahoo calendar work very well too.