Here's a quick look-up for admins on the maps in BlackOps:

  Map            FileName
01.Array          mp_array
02.cracked        mp_cracked
03.Crisis         mp_crisis
04.Firing Range   mp_firing_range
05.Grid         * mp_duga
06.Hanoi          mp_hanoi
07.Havana       * mp_cairo
08.Jungle       * mp_havoc
09.Launch       * mp_cosmodrome
10.Nuke Town    * mp_nuked
11.Radiation    * mp_radiation
12.Summit       * mp_mountain
13.Villa          mp_villa
14.WMD          * mp_russian_base

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Also, see >THIS THREAD< for the console commands to do wager matches.