Lighting through translucent particle effect?

Hi guys, I’m having a bit of trouble getting my particle effect to light up properly. Basically i have a scene with a couple of rotating movable lights behind a screen of flowing steam.
When looking at the steam from the same side the lights are on, the steam seems to light up fine, but from the other side, the steam displays shadows where the beaming lights should be. Any solutions would be great.
Here’s a couple of pictures to demonstrate my point… here’s the bad side where the lights are weird shadows…

and the front where they light properly, I need the lights to beam through orange, even with white smoke in my test level with normal lighting, i still cant get it to work :frowning: