IN SQL-2000
To disable / enable selective triggers...
ALTER TABLE tableName DISABLE TRIGGER triggername
ALTER TABLE tableName ENABLE TRIGGER triggername
To disable / enable all triggers...
ALTER TABLE tableName DISABLE TRIGGER ALL
ALTER TABLE tableName ENABLE TRIGGER ALL
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IN SQL-2005
To disable / enable selective triggers...
DISABLE TRIGGER triggername ON tableName
ENABLE TRIGGER triggername ON tableName
To disable / enable all triggers...
DISABLE TRIGGER ALL ON tableName [optional:All server]
ENABLE TRIGGER ALL ON tableName [optional:All server]