Flash Effects with ActionScript Pulse Particle System
Pulse Particle System is also a Flash ActionScript 3 Particle System. It allows you to create very wonderful Flash Particle System without writting Flash ActionScript 3 codes. It takes only a very short time to produce stuning Flash effects, for example, raining, snowing, fog, water fall, rough sea effect, smoking, etc.
Preparation to Use Pulse Particle System
You need to download the ParticleEmitter.mxp flash extension on developer website and install. After installation, you can find the ParticleEmitter component from the Component window in Flash application.
Steps in using Pulse Particle System as a Flash Component
Step 1: Design Animation
Use Particle Explorer to design the animation of the particles. Copy the animation code when you are done.
Step 2: ParticleEmitter component
Open Flash CS3 and create a new AS3 file. Drag the ParticleEmitter component into the Library of your flash file. Create a new Symbol (e.g. MyParticle) in the Library, set linkage (Export for ActionScript) and give it a class name (e.g. MyParticle).
Step 3: Draw Particle
You should now working in the Symbol scene (MyParticle). Draw any shape of the particle
you like.
Step 4: Set Parameter
Select the Scene. Drag the ParticleEmitter component from the Library to the stage. Double click the ParticleEmitter component. Select the Parameter tag next to the Properties window. Paste the animation code to the Config field. Enter the Symbol (MyParticle) you wish to animate in the movieClipName field. Enter the number of particle per second in the pps field (e.g. 10). See below diagram.

Step 5: Test Particle Ststem
Test the movie. Your own Particle System will be shown when test the movie.
Remarks:
This Flash ActionScript tutorial shows how to make interesting flash effects with Pulse Particle System.