C#: Rotating Mesh

[john tindell]

Hey i am trying to move and rotate a Mesh. I am using DirectX 9 and C#.

I can move my Mesh backwards and forwards, along the Z axis. But the mesh rotates about a fixed point, the point from where the Mesh was first drawn.

heres the code i am using to draw the Mesh

device.Transform.World = Matrix.Scaling(Scale,Scale,Scale)
* Matrix.Translation(new Vector3(m_X,m_Y,m_Z))
* Matrix.RotationY( m_Rotation);

for(int i = 0; i < carMaterials.Length; i++)
{
device.Material = carMaterials[i];
device.SetTexture(0,carTextures[i]);
carMesh.DrawSubset(i);
}

I does rotate but about the wrong point? any ideas?

Thanks