Install Tok-tok Icons on Ubuntu 11.04 “Natty Narwahl”
On gnome-look.org i found the Tok-tok icon theme. The Tok-tok icon-theme contains: 803 actinons icons, 1298 apps icons, 88 devices icons, 69 filesystems icons, 271 mimetypes icons, 67 places icons and 179 status icons.
To install the Tok-tok icons download them from this page. When downloaded extract the content of the tok_tok_by_drawerpal-d3gbkdx.zip file. Then open your appearance manager (press Alt+F2 and type: gnome-appearance-properties) and select the Theme tab. Then all you have to do is simply drag and drop the tok-tok.tar.bz2 file into the appearance manager. When installed you’ll be asked to apply the new theme.