If you like chrome appearance more than the boring looks of firefox, then this is the right post for you. You can change the appearance of firefox completely to firefox with an extension called Total ReChrome.
Total ReChrome configure the tabs to be located on the upper side to make it look identical to google chrome, it also adds glass effects in vista and perform some other useful tweaks.
Total ReChrome also moves the stop button on the left of the address to right side of the address to make it look exactly as google chrome.
Total ReChrome will change the look and feel of firefox to make it look exactly like google chrome.
However there are some pre requirements for Total ReChrome.
1. Windows Vista or XP is required
2. Chromifox skin is required to be installed from the following link:
After fulfilling the above requirements, Install Total ReChrome Extension from here
Note: Total ReChrome is an experimental add on so you will need to register with Mozilla to download and install the extension.