Realistic Smoke

Does anybody know where a tutorial is to create smoke like this:

He posted a tutorial…next time take a look through the comments.

very nice smoke. Real looking.

Heres another tutorial from blender noob to pro ( )

I’ve double checked everything that I can see in the ( the first one listed, the one in BlenderArt mag #16) tutorial and when I do the animation the grid just floats downward as a flat sheet. I expected to see the effect of the wind and weight painting and I do not. Please help this beginner, I’d love to duplicate this wonderful effect.