Most of our computers are still on Office 2003. Some of them have certain components of Office 2007 installed, eg Outlook 2007. We need to deploy Infopath 2007 but I get a message saying that you can only use MSP's on first time deployment, I'm assuming this is because the computers affected by this message already have some component of office 2007 installed.

Is there any way to upgrade office silently to just install infopath 2007?