: The 2009 release is backward compatible with 2007 and 2008 formats. Operating System Support : Native support for Windows XP (SP2) and Windows Vista. : Supported on 64-bit systems (XP x64 or Vista 64) only in 32-bit compatibility mode Limitations
For official support or legitimate legacy access, you can check the Autodesk Support Site or the Autodesk Community Forums to see if you have access to older versions through a current subscription. : The 2009 release is backward compatible with