[Plugin: NextGEN Scroll Gallery] Scroll Order

Hi
I’m using Nextgen Scroll Gallery for the first time, and I can’t see how I can control the scroll order. I have 10 images, named 1 to 10 and the order is 1,10,2,3,4,5,6,7,8 & 9. How can I get it to scroll through the images i.e. 1 to 10?

Thanks

Colin

http://wordpress.org/extend/plugins/nextgen-scrollgallery/