The Commonwealth Games Organizing Committee Chairman Suresh Kalmadi today asserted that all the seventy-one countries of the Commonwealth are participating in the Delhi Games.Replying to a question on the security scenario in the capital after yesterday's firing incident, Mr. Kalmadi said that security for the games is being further stepped up to avoid any untoward incident.Earlier this afternoon the main press centre as well as the international broadcast centres for the Commonwealth Games were inaugurated by the Union Minister for Information and Broadcasting Mrs. Ambika Soni at Pragati Maidan New Delhi. The state of the art media and broadcast centres are some of the best facilities for the journalists covering the Commonwealth Games beginning under a couple of weeks' time in the capital.