Install Ogre
First you have to download the Ogre1.6.3. sources from sourceforge.

• Don't try to use a version from your Distro.
• Don't try to use any other version. (1.6.4 for example is broken)

Then you have to install the dependancies (debian example)
apt-get install autoconf automake pkg-config libtool
apt-get install libzzip-dev libfreetype6-dev libxt-dev libxaw7-dev libxxf86vm-dev libxrandr-dev
apt-get install libfreeimage-dev libois-dev
apt-get clean
Compile Ogre3d

Install Client3d
Install the dependancies (debian example)
apt-get install subversion libsdl-dev
Get the client3d sources from the daimonin svn on sourceforge.
svn co https://daimonin.svn.sourceforge.net/svnroot/daimonin/trunk/client3d daimonin_sf/client3d
Compile the client.

Download the latest binary demo from the daimonin page on sourceforge and copy the media folder over your client3d media folder.