Installing Permissions plugin on servercraft.co server?

Hi,
I'm attemping to install the Permissions mod (http://forums.bukkit.org/threads/ad...world-permissions-556.5974/page-12#post-95115) on a servercraft.co server, but I can't create a world.yml (servercraft.co doesn't give FTP)

Is there any way to create the file ?

Thanks for any help