If you''re using Dot3 Bump-mapping, it shouldn''t be necessary to use vertex normal lighting as well, should it? I guess that the light vector used by the Dot3 isn''t affected by the angle of the face, so you''d need to change the light vector per face as you''re drawing but... how do you do that? Last thing to go through a tortoise''s mind before it hits the ground at 40mph? "D3DXVec3Add (Tortoise.Pos, Tortoise.Delta, Tortoise.OldPos"