Q: how can I two-way synch my iphone 4 calendar with Outlook 2010

Hello ltomboulian,

The article linked below details how to configure iTunes to sync this information.

iTunes 11 for Windows: Sync contacts, calendars, and other info with iPod, iPhone, or iPad

http://support.apple.com/kb/PH12317

Should the sync not be functioning correctly, the two further articles below can help resolve the issue.

iPhone, iPad, iPod touch: Microsoft Outlook 2003, Outlook 2007, Outlook 2010 may not display contacts and calendars after sync

http://support.apple.com/kb/TS1944

Troubleshooting Sync Services on Windows with Microsoft Outlook 2003, Outlook 2007, or Outlook 2010

http://support.apple.com/kb/TS2776

Cheers,

Allen