Your host maybe have an early backup of your site, i mean if you don´t already have that..? Hopefully the problem was not there from the beginning..? But i guess you have already tried that as well.. =/
I use Hostgator.. I will contact them and ask!! Thanks a lot for your help!
I guess it´s to late now. the database is deleted.. =(
Thanks for your quick answer!
Can this be done even when i have deleted the installation from the Fantastico?