Integrating Exchange 2010 calendar with Linux - The Horror

It would be possible to publish the .ics file, then miport it.  But our admin staff won't allow this.  So... 

1. Find a Windows machine with a Staff install.
2. Got to Outlook, Sharing, Pulish to Webdav server, and publish to http://www.icalx.com/public/mattstudley/Matthew_Studley_Calendar.ics
3. Now import into Google Calendars... 
4. Or into Thunderbird, etc.

This isn't a full integration.  But at least will allow me to see the events that people past in my calendar.  

What I need is full integration - I want to be able to publish my Google Calendar events to my outlook calendar so people can see my availability, and I want them to be able to insert items into this calendar so that I can see them in Google Calendar.