1. hi i have just maked my addon

    end Author : Naptor

     -- Create Date : 8/10/2009 6:42:18 PM
    
    
     function helloWorldFrame_OnLoad()
     frame:RegisterEvent ("PLAYER_TARGET_CHANGED");
     end
    
     function helloWorldFrame_OnEvent()
     if (event == "PLAYER_TARGET_CHANGED") then
     if UnitExists then
     messageAddon:SetText ("Hello " .. Unitname ("Target") .. "!");
    
     end   
     end
     end
    
     function Closebutton_OnClick()
     helloWorldFrame.Hide();
     end
    

    But when i but it in my wow folder but it dont shows in addon list (ingame)