How To Use Firefox Themes
In some cases, Firefox will recognize the .jar file as a theme and prompt an “Install now” dialog.
- Save the .jar file to your computer. If it is in a zip file, unzip.
- In Firefox, click Tools > Add-ons > Themes to open the Themes window
- Drag the .jar file into the left panel of the Themes window, which will prompt the “Install now” dialog.
Now that that the theme is installed it should be listed in the Themes window. Click “Use Theme” and restart Firefox for the theme to take effect.
How To Unzip A File
Some downloaded files are in .zip or .rar format. These files must be “unzipped” before they can be used.
How To Unzip a .ZIP File
On Windows XP, Vista and Windows 7, unzip support is built-in. First, double-click on the .zip file to open it up.
In the window that opens, click Extract all files.
The Extraction Wizard will open. Click Next to continue.
From the Select a Destination dialog, select the location where you want the folder to be placed (by default this will be in a subfolder of the folder the .zip file is in). Then click Next to extract the files.
Make sure Show extracted files is checked, and then click Finish. The unzipped files will appear in a new window.
How To Unrar a .RAR File
Download WinRar then install it.
Then open a .rar file and press Extract To and press OK.