http://www.kerkythea.net/joomla/index.php?option=com_openwiki&Itemid=75&id=tutorials
(found tutorial page) Scroll down and it there is a link to a tutorial about how to make your own sky (backround landscape)
I will try ther same tutorial with some Dover cliff backrounds
)
sounds coplicated
We should better ask someone who knows allot about kerkythea and knows how to use it
EDIT: Oh and if you want to use the backround i used for my second pic use this link:
http://www.kerkythea.net/joomla/index.php?option=com_remository&Itemid=42&func=fileinfo&id=44