Yes, it's me begging for help again...
I read in "Essential lightwave v9" that you could make an expression to increase the amount of jetflare for an object based on it's velocity. I have a spaceship where I'm using glow and lens flares for the engines, and If I had a scene where 50 or so of these things were flying around, It would be a pain to animate them all, so how would one write an expression to do this for them?