Hi Tom,
It's not clear what patch your adding to the Office 2003
installation (Office 2003 is at SP1 rather than SP3).
Office Service Packs would usually be in MSP rather than MSI format.
Generally, you'd create your Office Admin Point first then
apply the updates to the Admin Point so that when you install
from the Admin point with your MST the client computer would
receive the updated version at first install.
This article has additional options you can choose for applying
Office updates
http://microsoft.com/office/ork/2003/five/ch18/MntA01.htm
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I created my .mst file with Custom Installtion Wizard (CIW), I'd like add in
step 16 (Add Installations and Run Programs) SP3 and patch for spam
filter.But I dont know how can I add MSI packages. Can you help?
At least a link to article which describe this problem.
Thanks Tom >>
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Let us know if this helped you,
Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*
Office 2003 Editions explained
http://www.microsoft.com/uk/office/editions.mspx