The emulator and various themes are available through the normal process in application manager. If you still want to install these files google enable red pill mode. Using this setting you can use the install from file option in the application manager drop down menu. Be warned through enabling Red pill mode can damage your device if you dont know what your doing as it takes away some of the in built user safe guides. Everyone needs to experiment though but I use the N900 sdk emulator for that rather than my £500 phone. Google search the forum for the SDK installation instructions. Happy experimenting.