surface shading with transparency

Hi All,

I've been fighting a little with this issue and I was hoping you could help.

I have an image of a cloud which I would like map on a plane maybe using the cloud's alpha to cut it out. My challenge is that the cloud has a semi-transparent dropshadow and at the same time I would like it NOT to be affected by lights in the scene (in maya called a surface shader - I believe this equals a self illum shader in unity?)

I've attached an image of the cloud to clarify my problem

Can someone help me here?

Thanks Jeppe

alt text

Try importing the texture with alpha channels.