No... It's more likely that I'm missing the point. I've come to GameStudio from 3D RAd, and 3D RAD has a weather resource with some great looking rain. I was basically converting that into GameStudio. But then, 3D RAD has absolutely no particle effects in it... So I think you're right, particles are the way forward. I just haven't messed around with them much - time to learn... Is that how most games generate rain?
Cheers,
Keith