I think this is an age-old question in Wordpress. It's handling of images has improved somewhat in recent versions but it's still difficult to insert a number of photos in a neat layout. That's all I am asking. Nothing fancy. No flash.
I have tried NextGen Gallery and lazyest-gallery, and could get neither to work.
This needs to be very simple for a client who will be managing the site going forward.
Maybe it would be better for them to get a Picasa or some other account like that, and manage their photos through that, with a plugin that displays the photos from that account in WP.