You know I am so out of my depth with shaders
most of what you just wrote shot right over my head...
I think I should revisit the wiki and take a look at the shaders, i've somewhat pickled this one and no idea where it came from in the first place.
Thanks Slin
EDIT: Ok it is that shader from the wiki... trying to figure out what I have to change. Thanks for the pointers, I will let you know how I get on
EDIT2: I have made these changes but the lighting issue still remains.?!?