Sorry — looked at these and forgot to reply. It’s a very complex example, that I’m not sure you’ll be able to pull off without a fully 3D particle system. That camera zoom is a big problem.
If this were my project, I probably wouldn’t use a force to fake the zoom — I’d probably add a second emitter with a bigger “zoom” property value and start it where the force kicks in. It would be based on the original emitter, but with the glow and possibly some other parts removed.
Alan.
wondertouch