Is it possible to make particles follow a specific path. I would like a particle stream to spiral around a tube before bouncing across a floor. I am a neophyte do I first wondering if it is possible and how diffcult it is.
many thanks for an replies.
I must admit that I only did a quick test, but this seems to be what the Curve Guide Force Field is for.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Physics/Force_Fields#Curve_Guide
I just created some particles, added a Curve Guide Force Field and moved some of the path’s vertices around in edit mode. After that the particles followed the path. Seems to be quite straight forward to me. Hope this helps 
It is all a question of vocabulary. Below is one of many tutorials on curve guides.
Many thanks for getting mr on the right track