Injuries and suspensions have deprived the Republic of Ireland boss of a number of first string players.
But O'Neill refuses to bemoan his depleted options, saying the result is all that will count.
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Kick off in Zenica is at 7.45.
Meanwhile
Hungary will take a precious away goal into their playoff second leg with Norway.
The Magyars held off some late pressure from their hosts to leave Oslo with a 1-nil lead last night.
Elsewhere last night, Argentina and Brazil's South American World Cup qualifier was postponed for 24-hours due to heavy rain in Buenos Aires.