You have to change the speed, rate, position, noise, sigma, and trail life to get different results.
Particle:
Friction: 0
Electric: 0
Magnetic: 0
Mass: 0.1
Life Time: 15 +/- 3.0
Trail Life: 0.03 +/- 0.01
Noise: 0
Sigma: 0
Size: 0.2
Blur: Full
Blur Size: 0.20
Color: Light Blue
Shape (color): Star or smooth
Source:
Geometry: Square
Generation: Surface
Emission: Normal
Position: You choose
Scaling: 30,20,30
Rotation: 80,0,0
Direction: 170 +/- 10
Spread: 5 +/- 2
Rate: 4000 +/- 500
Speed: 28
That is all you need to have a snow storm. You should try to change the values and see what happens,
it is the only way to learn and control what you are doing.
Good Luck
Alex