I just began using Maya and I'm new to 3D-modelling. I'm doing the Learning Maya 7 Foundation tutorial now (Alias training guide book) and everything has gone fine though I'm stuck now because of a very simple problem. I'm supposed to create a fire, and I'm supposed to see the particles in the perspective window when i play the animation with the time slider, but nothing shows up. The only window that shows the particles is the Side Panel. Would appreciate help .

Thank you.