The Office 2003 PIA Redistributable package is available for download.
Located at http://www.microsoft.com/downloads/details.aspx?familyid=3c9a983a-ac14-4125-8ba0-d36d67e0f4ad&displaylang=en, the O2003PIA.exe is an IExpress package which, when run, will extract the included files onto your drive. The files included are
Basically, to install the package, you can execute the MSI according the instructions in the ReadMe. If you are planning to redistribute this MSI as a part of your Office solution, then you will need to include this msi along with your setup project, whether by custom action in a Visual Studio setup project or by including it (chaining) within a non-Microsoft setup builder.
Important Issues to keep in mind: This MSI is designed to contain all of the PIA's which shipped with Microsoft Office System 2003. The product PIA's will only install if the parent product is installed on the machine. Leave the PIA redistributable on the machine once it's installed. Because this product is redistributable, many add-ins could ship it. The MSI will only install once and then subsequent installs would just see that it's already on the machine. Removing it via Setup logic will remove it for everyone. The current recommendation is to leave uninstallation of the PIA Redistributable to the end user through Add/Remove Programs.
Important Issues to keep in mind: