Start with http://www.google.com/search?q=%22office+xp%22+SP3+%22error+1328%22
If that doesn't help widen your search with http://www.google.com/search?q=%22office+xp%22+1328 but most of the hits are for SP1.
Hope this helps.
Kees
On the Microsoft Office Update, I downlaod the Office XP Service Pack 3 and the installation failed. I don't know why !
I downlaod the update file .exe on my HD but the installation failed too due to :Error 1328

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