Shadow Images From Fluids

[msal0424]

For part of a homework project, I am trying to create an image from smoke or fluid systems to create a basic logo.

Basically it is broken into a few phases

1. dark scene has a couple of areas that are creating trails of smoke
2. each trail forms into an image or series of words then moves on

how would i create the smoke to form into objects.
i was told to use fluids.

[msal0424]

http://www.3dtotal.com/team/Tutorials\_2/me.../melting\_01.asp

i found a tutorial that more or less gives pieces of what i need.