How do i make my particle system aim straight down? I tried a target_postion but it didnt work.
You need to set the velocity and acceleration in the particle system. See here: http://tremmapping.pbwiki.com/Particle+System
To make the particles aim and accelerate down the PS would need to include something like this:
velocity 0 0 -1 ~0
velocitymagnitude 20
acceleration 0 0 -1 ~0
accelerationmagnitude 10
thanks again Taiyo, your a big help