Set properties to be applied during the Office installation. You can customize Setup properties only when you first install Office on a user's computer; properties set in a customization file do not take effect if you apply the file to an existing installation.
To add a property, click Add. To modify a property that you have added, select the property, and then click Modify. To remove a property that you have added, select the property, and then click Remove.
For more information about properties and their values, see Setup properties in the 2007 Office system in the 2007 Microsoft Office Resource Kit.