Currently Being ModeratedJan 2, 2013 12:58 PM (in response to The_Lynchster)
From Apple Support http://support.apple.com/kb/TS4185
To participate in video calls, your Mac needs:
OS X Lion or Mac OS X v10.6.6 (or later) with all available security updates installed. For Mac OS X v10.6.6 or later, the FaceTime App needs to be purchased from the Mac App Store. OS X Lion includes FaceTime.