The Firefox extension allows access to the network
  folder for a space in the Firefox browser.
    To access the network folder for a space in the Firefox browser, you must install the
      SkyVault Firefox extension.
    - Go to the URL: http://sourceforge.net/projects/alfresco/files.
 - Select the [Archive] folder, then the Firefox extension folder, and then the 0.91 folder.
 - Click the SkyVaultext-0.91.xpi.
 - Enter your work email address and click Download now.