Here is the basic one we generated for our server, to find out how to do it checkout
http://www.evenbalance.com
;Auto Generated by PunkBuster Server
pb_sv_MsgPrefix "PunkBuster Server" //[PB Message Prefix (default=^3PunkBuster Client)]
pb_sv_MaxDlRate 4 //[KB/sec requested per file (default=4)]
pb_sv_MaxConDls 1 //[concurrent downloads (default=1)]
pb_sv_KickLen 2 //[minutes (default=2)]
pb_sv_CvarFreq 6 //[# of range checks per minute]
pb_sv_CvarLogging 2 //[1=Reg. Log, 2=Var Log, 3=Both, 0=Neither]
pb_sv_CvarWalk 4 //[0=disabled, 1-4=Walk through obtained Cvar lists]
pb_sv_CvarUserPulse 10 //[How often (in min.) to auto-send CvarUser command]
pb_sv_CvarChangedPulse 10 //[How often (in min.) to auto-send CvarChanged command]
pb_sv_CQC 1 //[0=No, 1=Yes (default=1)]
pb_sv_LogSync 0 //[0=No, 1=Yes (default=0)]
pb_sv_LogCeiling 1000 //[High log filename serial #]
pb_sv_SsFloor 1 //[Low screenshot filename serial #]
pb_sv_SsCeiling 200 //[High screenshot filename serial #]
pb_sv_SsCmd "" //[Filename of system command to run after screenshots]
pb_sv_SsWidth 320 //[Requested pixel width of remote screenshots]
pb_sv_SsHeight 240 //[Requested pixel height of remote screenshots]
pb_sv_SsXpct 50 //[Percentage across screen for remote screenshots]
pb_sv_SsYpct 50 //[Percentage down screen for remote screenshots]
pb_sv_SsSrate 1 //[Sample Rate for remote screenshots]
pb_sv_SsDelay 0 //[Maximum delay client waits before capturing screenshot]
pb_sv_SsPath "" //[Path where remote screenshots are saved]
pb_sv_AutoSsFrom 60 //[Minimum # of seconds to wait before requesting next ss]
pb_sv_AutoSsTo 1200 //[Maximum # of seconds to wait before requesting next ss]
pb_sv_AutoSs 1 //[0=No, 1=Yes (default=0)]
pb_sv_Sleep 60 //[# of Milliseconds (default=60)]
pb_sv_PowerMin 10 //[power points]
pb_sv_PowerDef 1 //[power points]
pb_sv_PowerKickLen 5 //[minutes (default=5)]
pb_sv_httpPort 0 //[port #]
pb_sv_httpAddr "" //[external IP Address]
pb_sv_httpRefresh 30 //[seconds]
pb_sv_httpKey "" //[key]
pb_sv_httpMaps "" //[map list (separate by spaces)]
pb_sv_scoreKick 0 //[minimum score (negative)]
pb_sv_changePeriod 999 //[seconds]
pb_sv_changeMax 1 //[max name changes allowed]
pb_sv_dupNameGrace 0 //[seconds]
pb_sv_autoUpdBan 0 //[0=No, 1=Yes (default=0)]
pb_sv_extChar 1 //[0=No, 1=Yes (default=0)]
pb_sv_guidRelax 2 //[1=UNKN, 2=WRONGIP, 4=DUP (add desired values)]
pb_sv_load pbsvlog.cfg //load remote logging settings (if pbsvlog.cfg exists)
;Badname List - pb_sv_badname [grace_period_secs] [disallowed text]
;Cvar Range List - pb_sv_cvar [cvar_name] [type] [value(s)]
pb_sv_cvarempty