Article: The Frozen Throne").  " The status bars will indicate the progress of the installation. Otherwise you can just click "No" and open the game later through the directory where it is installed.

What is a summary?
Put the installation CD into your CD drive to run the installation wizard. Click on the installation button ("Install Warcraft III" or "Install Warcraft III: Enter your name and the CD key found on the cover or box in which the CD was purchased. Browse to the directory where you want to install the game and hit "OK. Wait for the game to install. Create a desktop shortcut if you want by clicking "Yes" in the window that pops up.