# File lib/ec2/ec2.rb, line 474
    def run_instances(image_id, min_count, max_count, group_ids, key_name, user_data='',
        addressing_type = nil, instance_type = nil,
        kernel_id = nil, ramdisk_id = nil, availability_zone = nil,
        block_device_mappings = nil)
      launch_instances(image_id, {:min_count             => min_count,
                                  :max_count             => max_count,
                                  :user_data             => user_data,
                                  :group_ids             => group_ids,
                                  :key_name              => key_name,
                                  :instance_type         => instance_type,
                                  :addressing_type       => addressing_type,
                                  :kernel_id             => kernel_id,
                                  :ramdisk_id            => ramdisk_id,
                                  :availability_zone     => availability_zone,
                                  :block_device_mappings => block_device_mappings
      })
    end