>Download the file from mediafire.
>>Unrar it ( if its in a ra file. demo files are ( .dem) files.
>>>Place in steam/steamapps/yourname/counterstrikesource/cstrike/
>>>>Launch Counter strike source.
>>>>> type playdemo (demoname)
>>>>>> type demoui after wards to enable the ui command window.
>>>>>>>also type sv_cheats 1 ( for turning on the walls)
>>>>>>>> type r_drawothermodels 2 ( this allows you to see wireframes through materials, without all that wireframe bs. Its like wireframe ESP.