Just 2 different ways of displaying images. The light box is for the occasional 1 or 2 images. And the gallery is for more images. The gallery has the facility of being able to reduce & give better quality thumbnails if the "create thumbnail" box is checked when creating the gallery.
Why yours is not working? would be best to post the page url so we can see. Are you using the same images as you did in the light box test??? This will let you know that the images are ok & working in your browser.

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From Chris,

www.collectors-info.com
View sites in FF & IE, with res @ 1024 x 768 on 19” screens.

How to ask for help on the forum. - VH prices. - BV Tutorials. - Using PIXresizer - Image/Photo Tips