Solution
AutoCAD 2010 is compatible with the 32-bit and 64-bit versions of Windows Vista Enterprise, Business, Ultimate, and Home Premium (SP1).
AutoCAD 2008, AutoCAD 2009, and AutoCAD LT 2009 are compatible with the 32-bit and 64-bit versions of Windows Vista Home Basic, Home Premium, Ultimate, Business, and Enterprise.
AutoCAD LT 2008 is compatible with the 32-bit versions of Windows Vista Home Basic, Home Premium, Ultimate, Business, and Enterprise.
Service Pack 2 for AutoCAD 2007 and AutoCAD LT 2007 adds support for Windows Vista 32-bit versions for these releases. To download Service Pack 2, use one of the following links depending on your product:
AutoCAD 2007
AutoCAD LT 2007
AutoCAD 2007 Service Pack 2 for Autodesk AutoCAD Revit Series—Structure 3
AutoCAD 2007 Service Pack 2 for Autodesk AutoCAD Revit Series—Structure 4
AutoCAD 2007 Service Pack 2 for Autodesk AutoCAD Revit Series—Building 9.0
AutoCAD 2007 Service Pack 2 for Autodesk AutoCAD Revit Series—Building 9.1
Note: For AutoCAD-based vertical products, refer to the System Requirements information in the installation documentation located on the product installation media. These products may or may not support all of the operating systems listed for the corresponding AutoCAD versions.