Microsoft recently released SharedView, an application sharing product that you connect with up to 15 people in different locations and get your point across by showing them what's on your screen.
Share, review, and update documents with multiple people in real time. A Windows Live ID (Passport, Hotmail, or MSN) is required to start sessions, but not to join sessions. New in version 1.0: we have added a web based join experience to make SharedView even easier.
It’s a fast, easy way to share documents and screen views with small groups of friends or co-workers; anytime, anywhere. Use SharedView to put your heads together and collaborate - create, convey, and communicate…across physical boundaries, through firewalls, and down to the smallest details.
Create a session using one of your Windows Ids, invite others with an auto-generated password and you’re able to collaborate and share without leaving your seat.
Download it at: http://www.microsoft.com/downloads/details.aspx?familyid=95AF94BA-755E-4039-9038-63005EE9D33A&displaylang=en
Or check the site at http://connect.microsoft.com/site/sitehome.aspx?SiteID=94