[Plugin: NextGEN Gallery] photo frame

hi!

Before my thumbs used to have a frame (with a border) around them and now it disappeared. on the link below it is an example of the border, but on mine it doesn’t show…
http://cribbster.wordpress.com/2009/08/07/review-the-cove/
my blog http://www.frangoncalves.com

how can i get it back?
Thanks

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