How To Paint steel, Aluminum, Plastic, and Acrylic
 

A guide posted at Overclockers.com on how to get the best paint effect on the above mentioned materials:

"This guide will cover prepping and painting of steel, aluminum, plastic, and acrylic plus more. I'm sure some people will think some of the steps are not necessary and quite extensive compared to some guides. Yes, this may be true but I am writing this guide to help get a quality finish from your case, not something that looks like the neighbor painted in his homemade cardboard paint booth with a 99 cent can of paint from the dollar store.

http://www.overclockers.com/articles1407/

Painting and sneezing don't mix; if you must, sneeze away from the object and hope for the best.

I found that not a lot of things mix with sneezing;)

In association with "spraying", ;)