[Plugin: NextGEN Gallery] Using NextGen in old site

Hi all,

I use WP 3.0.1 and have many posts with images. In this post’s use lightbox2. Now I like use NextGEN. How simple import old images? Must all articles edit to set new images url? How put single image to post with NextGEN?

Thanks

https://www.ads-software.com/extend/plugins/nextgen-gallery/