You are having problems installing the Screen theme?
Make sure you’ve installed the WordPress CMS on a server that supports PHP-5. After you have installed WordPress 3.0 or more you’ll have to install the theme. Upload the theme to: wp-content/themes
Go to Appearance and select Themes. You’ll see Screen if you installed the theme correctly. Press activate to use the theme on your website. Go to your website and you’ll see that Screen is installed and you are ready to adjust the content and design of your website any way you want.