Help on PB's Particle Engine

[Master Games]

Hey all,

Is there a tutorial or can some one write one, that explains how to use pb's particle engine or how to make your own? PB's manuel says that PB's particle engine can simulate rain, fire, fog, and smoke. How? All I see is a few commands and I can not do much with them. All I can do is just see particles coming from the emmiter coming up, and I can only change the speed, how many, and the material.