AutoCAD Updates and Service Packs only are available from the Autodesk page "Updates and Service Packs":
AutoCAD Architecture 2009 Update 2 AutoCAD 2009 Update 2 AutoCAD Architecture 2009 Update 1 32-Bit AutoCAD Architecture 2008 Service Pack 1 AutoCAD Architecture 2008 Service Pack 1 AutoCAD 2008 Service Pack 1 AutoCAD 2007 Service Pack 2 AutoCAD 2007 Service Pack 1 AutoCAD 2006 Service Pack 1 AutoCAD 2005 Service Pack 1 AutoCAD 2004 Service Pack 1 AutoCAD 2002 Service Pack 1 english locked AutoCAD 2002 Service Pack 1 english unlocked AutoCAD 2000i Service Pack english locked AutoCAD 2000i Service Pack english unlocked AutoCAD 2000 Service Pack 2 english locked AutoCAD 2000 Service Pack 2 english unlocked AutoCAD 2000 Plotting Update Patch AutoCAD 2000 Update Patch 3D Grafics System (engl.)