Roger Selwyn, one of the developers of the Events module had this to say over on the DotNetNuke forums:
"In 5.2.0 we are implementing the iCal standard (RFC 5545) for exporting events from the whole module. Previously this was available on a per event basis. This will allow you to sync your events to Google Calendar/Outlook/Facebook (though the Facebook application that achieves this lost it's support yesterday).
There are requests for the reverse (i.e. sync from Google to Events module) which we will certainly look at for future versions, not commitment as to when. This would be done via standard iCal export assuming Google supports that...."
So, it seems that the answer is "yes".
It is also possible to embed a Google calendar in a DotNetNuke HTML module. See this: http://www.dotnetnuke.com/Resources...odule.aspx