I have been tryin to create a silent install of Flash8 pro. First i created an administrative install using msiexec /a "****.msi" Next i edited the msi in the newly created admin install. I then copyed the installer.mlf and license.mlf using installshield. Then i was able to incorporate the serial number into the msi using orca see the attached image. I have not tried a silent install but i will be testing this with group policy in basic mode hopefully it works. I did try just running the msi and did a next next next type of install and when the install was finished i ran flash and it opened with no problems without asking for registration or serial. Hope this helps.