Thanks to prathapml, finally, I succeeded in the complete silent installation Office 2007. I use Option A together with Option B to install. 1)Copy all folders and files in OFFICE12 DVD to D:\office2007 (example) 2)Make a Unattended.MSP (*.MSP) Set OFFICE12 in DVD-ROM drive (example. F drive) Execute the command F:\setup.exe /admin Save as "Unattended.MSP" in D:\office2007 (In the same folder with setup.exe) 3)Make a "custom-uA.XML" as below, and put it in D:\office2007. 4)Then, just execute this command D:\office2007\setup.exe /adminfile Unattended.MSP /config custom-uA.XML I believe I have Office2007 Enterprise, not the other version. I tested some methods to install Office 2007 including prathapml's Option A, but I could not install Office2007 Enterprise silently. I still got a dialog window asking and I had to choose Office applications again. (The same dialog in Option A- 4.) I used both Option A and B, then I succeeded in the complete silent installation Office 2007. custom-uA.XML <Configuration Product="Enterprise"> <Display Level="none" CompletionNotice="no" SuppressModal="yes" AcceptEula="yes" /> <Setting Id="Reboot" Value="ReallySuppress" /> </Configuration> Be careful, it takes much time to finish the full installation. In case of my PC (northwood 3.4G memory2G) it takes about 10 minutes appearing Office products shortcuts in start-up.