image display unit in video game(s)

we need to create a display in cs 1.6. It should display picture(s) that will be sent from main hub. counter- strike 1.6, we need this client on maps such as de_inferno, de_train, de_dust2, de_nuke etc.. . This client must be downloaded by user when he or she is connecting to this game server to play the game. So when a person is joining de_dust2 he downloads this plug inn that is installed on this server. when the plug inn is downloaded and installed our displays must appear in spawn areas and must display up to 20 pictures with different time intervals. this plug inn would install 2 display units per server, per map. So lets say on de_dust2 we need a display in terrorist spawn and one in counter-terrorist spawn.