Thanks for that Adam,
I had no ShowBatchBuild entry in the code I downloaded from you at all. Should I have known that this line was needed? I'm not sure what knowledge of .net I'm missing.
Anyway, I've added the line as you suggest but I still get just a black screen. Where should this button be appearing?
Please bear with me because the gallery as it functions on your web site is exactly what I need so I need to get this working!
Thanks again,
Alex