hey guys i downloaded a couple of themes from the Ovi Store because i liked the wallpapers. right now i want to extract the wallpapers and turn it into an imageset (wallpaper set). i've searched and to access the themes folder i have to have access to root and enter '/ usr/share/themes' but whenever i type in root or sudo gainroot followed by entering the directory, i keep getting 'permission denied'. i already have rootsh installed.

..or am i just doing it wrong? is there any other or right way for me to extract the wallpaper from the themes? and once i extract it will it be in an imageset form?