To install a theme you have to unzip the file into your "themedir" now after youve done that you check if it has any *&^% ups in the "step.rc(themedir)" that clash with your system, if you dont know what to do about that just use your best judgement. Keep in my mind unless you know what your doing all themes wont work. Now after thats done you go to the "step.rc(litestepdir)" and switch the themedir(if you dont know what im talking about then do this) copy and paste from the themedir to the litestepdir that should work to. dont expect to use any theme switchers like that though.