I may have to roll out Office 2003 to 100+ computers, except not all of them have a licence for Pro. I will need a slipstreamed Office 2003 Standard and a slipstreamed Office 2003 Pro version available. Is this possible? I am under the impression that only the Pro version supports the /a (administrative install flag). Also, when I use the /a (administrative) flag, the installer will build a PRO11.MSI file. Inside this contains the serial number. While I don't want to have to put it in 100+ times, I don't want the users to be able to simply right click on the MSI and click "install" and then have access to Office 2003 Pro. I thought about making the slipstreamed version separate from the version that will be available to the users (the files will still need to be on the network in case they need a component from Word, it wont ask for a CD), but at the same time, I don't want them to have access to the full product by copying the MSI file, bypassing whatever MST or SETUP.INI files are in place. Is there any way to edit or modify the setup.ini file before its placed in the PRO11.MSI file after using the /a flag? Also, is there any way to slipstream Office 2003 SP2 without having the serial number in the MSI file (so it prompts for it before it installs or removes components)?