Slipstream Project 2003 SP3
How to slipstream Service Pack 3 into Microsoft Office Project 2003
These instructions apply to Project 2003 Standard Edition. To slipstream other versions, you’ll need to replace PRJSTDE.MSI with the name of the MSI for your Project Edition.
Steps
You’ll need a Volume Licence Key setup CD.
D:\setup.exe /aSave to C:\project2003\
Download Project 2003 SP3
Extract its contents to C:\Project2003SP3\ with:
Project2003SP3-KB923622-FullFile-ENU.exe /Q /C /T:C:\Project2003SP3\Perform slipstream with:
msiexec /p C:\Project2003SP3\PROJECTSP3.msp /a C:\Project2003\PRJSTDE.MSI SHORTFILENAMES=TRUE /qbDelete the C:\Project2003SP3\ folder as you no longer need it 
