Particle Effects with Textures

Hello EveryBody,
I want to make a falling leaves effect with the particle system,how i should go about this?i think i should use a leaf texture,but i dont know how i can put a texture in the particle system.I’m using unity4.1. Thanks in advance for any answers:)

When looking at the particle system in the inspector, there should be a rendering (or something like that) tab.

Open it, there you can chose which materiel the particles will use (just like with any other object).