Step 1) Download the Firefoxtheme.zip from the botton of the page
Step 2) Extract the Files to Desktop
Step 3) Find the Folders one is Called (Vista) one is Called (XP)
XP = Green, Vista=Blue
Step 4) Go to C:\Program Files\Mozilla Firefox\chrome
or where ever your firefox location is
Step 5) In the "chrome" folder delete the file "classic.manifest"
(Mozilla Firefox MUST BE CLOSED)
Step 6) Highlight the file "classic.manifest" from the XP or Vista Folder in
the "firefoxtheme.zip" file
Step 7) Drag the file you want in the "chrome" Folder
Step 8) Open up firefox and enjoy your theme
Step 9) If you have a Problem scroll down the page to the forms