could not install microsoft updatesOffice 2003 Service Pack 3 (SP3   

i keep gettingthis error saying could not install the following any ideaas 
why ?
Office 2003 Service Pack 3 (SP3)
Update for Office 2003 Alternative User Input (KB912440)
Update for Outlook Junk Email Filter 2003 (KB943591)

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Manny in snowy Vail

date: Sat, 15 Dec 2007 13:20:00 -0800   author:   Manny