Thanks CR, Will have a good read of that and try and get my head around it, I understand the programming aspect of it, but the schematics confuse me, as I said I'm very new to all of the electronic, but appreciate your help.
And dhenry, I started out with looking at LEds actually, they're much cheaper too, but people tend to like to argue the fact they're called a L Emitting d instead of actually thinking they can sense light too and help, what you said is interesting, you mention at the same time, does this mean the LED has to be lit when it is reading light, I'd assume that would then alter the read out?
I'll have a look into a photoresistor's though, thanks.
Also for this project I would be looking at getting as many sensing diodes into 5 x 4 inch area as possible, hopefully a few 100 as the more the better.