Silent install of Sage ACT! Premium 2011 is described here, in Answer ID 26837:
Hotfixes use a PackageForTheWeb (PFTW) installer with an embedded HotFixWrapper.exe. The PFTW package recognizes the /s and /a
HotFixWrapper.exe takes the following parameters: "-mode s" for silent install, "-type install" for installation, "-type uninstall" for uninstallation.
Silent install of the ACT Hotfix e.g. SP1 HF6:
ACT2011SP1HF6.exe /s /a -mode s -type install
ACT2011SP1HF6.exe /s /a -mode s -type uninstall
A logfile is placed under "My Documents".
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