Hello, i like to hide the final part of the URL. Instead of www.mydomaine.com/zenphoto/myalbum/myImage.jpg i like to have always only www.mydomaine.com . Is it possible and how can i install it? Best regards

That's not possible.
The closest you can get is by activating the tinyURL plugin.

Besides that it is not possible. Why would you want to do that? Neither you or anyone else would be able to link to anything on your site except the site itself. Very invonvenient since links to pages are the general way how people arrive on sites nowadays. Be it via mail or social networks.

You could create a custom theme that only uses JavaScript to load eveything. But that would be quite some work and I would really not recommend that…