Demande d'explication

Bonjour, je voudrais savoir comment faire pour commencer le multijoueur parce que ca me met ceci:WARNING: unknown dvar 'bg_shock_volume_effects2' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_weapon' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_weapon2d' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_nonshock' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_voice' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_local' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_local2' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_ambient' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_hurt' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_player1' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_player2' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_music' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_musicnopause' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_mission' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_announcer' in file 'shock/damage_mp.shock'
WARNING: unknown dvar 'bg_shock_volume_shellshock' in file 'shock/damage_mp.shock'
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PunkBuster Server: pb_sv_GuidRelax = 7 (0 to 7)
Hitch warning: 6171 msec frame time
Resolving cod4master.activision.com
cod4master.activision.com resolved to 63.146.124.21:20810
Sending heartbeat to cod4master.activision.com
Resolving cod4master.activision.com
cod4master.activision.com resolved to 63.146.124.21:20800
]what the fuck?
Unknown command "what"
Hitch warning: 1386 msec frame time
]ok
Unknown command "ok"
]ok
Unknown command "ok"
]63.146.124.21.20800
Unknown command "63.146.124.21.20800"
Sending heartbeat to cod4master.activision.com
Sending heartbeat to cod4master.activision.com