Minimizer for Enemy Territory is quite an important and useful thing. There are a few ET minimizers, but I would like to recommend you the best one I have ever used. It is the simplest and most efficient one.
To use it just download, unpack zip and open the minimizer exe file. It will be working as little tray icon. While you will be playing Wolf:ET just press Alt+Z combination and game will minimize. To maximize it again repeat the combination. It couldn’t be easier.
Here’s link to download it directly. It’s light and it takes only 24kB.