The Symbian 9 hss.dll should be installed on the device in the !:\sys\bin folder (the same folder where your application exe is installed)
Please note that using the DLL is for development purposes only. This is because the DLL can only exist on one shared location on the Symbian device, and your game would be unplayable if another game installs a newer version of the DLL in the same path.
To obtain the Hekkus static library you need to make a donation to the author at www.shlzero.com