Hi Roland,
Normally you would just set the ALLUSERS property to the appropriate value so that files are installed to the AllUsers folder. There are a few different values you can give this property. You can find documentation on this property and its values in the MSI help library. For registry keys you can either put them under the HKEY_LOCAL_MACHINE hive in the registry editor or you can put them under the HKEY_USER_SELECTABLE hive. If placed under the HKEY_USER_SELECTABLE hive then MSI will either put the keys under HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE depending on if the installation is per-user or per-machine. The ALLUSERS property will determine if the install is per-user or per-machine.