Removing smoking residue from textured sealing

I just bought a house that has been smoked in for years and am wondering what is the best way to remove the oily film that I'm sure is on the textured ceiling. I'm not sure that it will stick if I retexture over the existing oily residue. I will scrub the walls and then primer and paint them, but the ceiling appears to be a much tougher job. Any ideas on cleaning supplies, tools and methods would be appreciated.