Google Cloud Connect Plugin
Google Cloud Connect is the new way to collaborate on Microsoft Word, PowerPoint, and Excel documents with friends and coworkers, allowing you to share, backup, and simultaneously edit these documents all the while syncing to the Google Cloud.
Google Cloud Connect is a free plugin that improves Microsoft Office 2003, 2007 and 2010 on Windows PCs and adds simultaneous collaboration, revision history, cloud sync, unique URLs and simple sharing to the Microsoft Word, Excel and Powerpoint applications.
Google Cloud Connect will work with Windows XP with .NET Framework 2.0, Windows Vista, or Windows 7.
You can download Google Cloud Connect here.