Software Deployment

Most machines in our environment are running Office 2007. However we have many machines running Office 2000 + Outlook 2007 (required to support our hosted Exchange service). We're preparing to fully upgrade these systems to Office 2007 and I'd like to be able to remove all, or in some cases parts of Office 2000 while doing this.

I have created custom MSP files for Office 2007 that modify our existing 2007 install just fine and fully install Office 2007 the way we'd like. However even though the MSP file is configured to remove older versions of Office, it does not. According to the Customization Tool screen it does note that: "Changes...will only take effect during the first installation of the MS Office product". Since we do have Outlook 2007 deployed I assume this is the block.

I'm wondering what's the simplest way to do 2 things:

1. Fully uninstall Office 2000 and then immediately modify/update the Office 2007 install.
2. Uninstall all of Office 2000 except for Access (have some machines that will still need to run older version of Access), then immediately modify/update the Office 2007 install.

Any thoughts or suggestions would be appreciated.

Thanks.