Error Code 646

While trying to perfom the following windows updates I get an error code
646. I am using windows vista. Can somebody please help?

2007 Microsoft Office Suite Service Pack 1 (SP1)
Security Update for Microsoft Office 2007 (KB951550)
Security Update for Microsoft Office Excel 2007 (KB959997)
Security Update for Microsoft Office OneNote 2007 (KB950130)
Security Update for Microsoft Office PowerPoint 2007 (KB951338)
Security Update for Microsoft Office Publisher 2007 (KB950114)
Security Update for Microsoft Office Word 2007 (KB956358)
Security Update for the 2007 Microsoft Office System (KB951944)