I was having trouble installing FireFox with my own extensions and themes silently so I created a script that makes it much easier for me to manage. the best part is you never have to edit the script when you add new extensions and themes Step 1: Create a folder to use for FireFox setup files (example: $OEM$\Setup\FireFox) Step 2: Create a sub folder called addons (example: $OEM$\Setup\FireFox\Addons) Step 3: Download all the extensions you want to silently install to the Addons folder (example: $OEM$\Setup\FireFox\Addons\MyExtension.xpi) DO NOT CHANGE THE EXTENSION Step 4: Repeat Step 3 with the themes you which to install Step 5: Download the FireFox setup file you would like to use and place it in the "$OEM$\Setup\FireFox" Folder Not the addons folder Step 6: Download the file below and place it next to the FireFox setup file Notes: The FireFox setup file can be renamed to anything you would like just do not edit the description of the file or the company name in the properties this is how my script finds the file all you have to do from your unattended setup is call Install_FireFox, no switches or codes to deal with. attached is the Source file coded in AutoIt for those who would like to see how this is done. Exe File: http://rapidshare.com/files/89969866/Install_FireFox.exe.html Source.au3