If I hide the light though, it won't show up in any render will it? My aim is to batch render a layered psd with separate geometry, shadows etc. to use in digital and traditional artwork. It's a very graphically stylised look, so I want separate shadow layers I can alter, erase or blend at will over drawings etc.
I don't need a finished render, nor do I want to mess about too much with the light settings - just enough to give acceptable results. I've set up a batch render to output the PSD so I don't have to deal with individual files. The less time I can spend in Maya the better to be honest.