#include <sourcemod>    

   new Handle:g_hrul = INVALID_HANDLE;    

   public OnPluginStart()    
   {    
       RegConsoleCmd("rules", Ruless);    
       g_hrul = CreateConVar("sm_motd_rules", "Ссылка на картинку с правилами");    
   }    
   public Action:Ruless(client,args)    
   {    
       decl String:ruls[255];    
       GetConVarString(g_hrul, ruls, sizeof(ruls));    
       ShowMOTDPanel(client, "Правила", ruls, MOTDPANEL_TYPE_URL);    
       return Plugin_Continue;    
   }