A small update.
Using ProcMon I traced what happends when you change this value through the GUI, I found that it writes to this config-file:
%USERPROFILE%\Appdata\Local\Adobe\OOBE\com.adobe.accc.apps.<RANDOMGUID>.prefs
The file contains the following part (and lots of other things): installLocation>C:\Program Files (x86)</installLocation
But since the file seems to contain a random GUID and alot of other info this is not possible to deploy.
Do anyone know if it's possible to set it somewhere else, maybe in the registry?
Any help would be appriciated,
Robin