The new printing installs itself as a processing print utility inside your ArcGIS server.
The installation package of Dekho 4.1.9 includes an deployment utility pack. Look for “Dekho installation and Upgrade Guide.pdf”
The process is reasonably simple: updated the configuration file and specify your ArcGIS URL, username and password. You can now run the DekhoPrintSetup.bat file and the print service will be installed.