Rotate bullet on 90 degrees

I have code on fire :

Code (CSharp):

1. void onFire()
2. {
3.     Vector3 SpawnPoint = flare.transform.position;
4.     Quaternion SpawnRoot = flare.transform.rotation;
5.     GameObject Bullet = Instantiate (bulletPrefab, SpawnPoint, SpawnRoot) as GameObject;
6.     Rigidbody Run = Bullet.GetComponent<Rigidbody>();
7.     Run.AddForce(Bullet.transform.forward * 2*Time.deltaTime, ForceMode.Impulse);
8. }

But bullet always position
IIIIIII
IIIIIII <---------- vertical
IIIIIII
IIIIIII
And I need it must apeared in horizontal

````````````````` <---------------horizontal
`````````````````
How Can I do this?

 

ok , I got it after that codehave to add one more line:

Code (CSharp):

1. Bullet.transform.eulerAngles = new Vector3(-90, Bullet.transform.eulerAngles.y, Bullet.transform.eulerAngles.z);