How to set the default image file of a website:

• In the main menu go to: Site > Manage Sites.
• Then in the "Manage Sites" window press the "Edit" button.
• In the "Site Definition my new website" window select the "Advanced Tab"
• Then click on the folder icon next to the "Default Images Folder" section.
• In the "Choose local images folder for the site my new website" window navigate to and select the "images" folder.
• Press the "OK" button.
• Press the "OK" button again then press the "Done" button.