ask and you shall recieve, again this was just a quick test of the shader/particles, I have fixed the problem of the trail from snaping like it did in the first trail. I used a different expression on the first trail then I did on the others, but I like that one more, If I turned down the Threshold, it looks alittle better, to composite it in a real scene, all you have to do is a hardware render, and create a displacement in AfterEffects, Witch is what I am going to do when I show My Republican Gunship shooting at the Harrier, in that animation. Thanks, Brian I used DIVX to compress it.