WordPress.org

1. Upload the files to wp-content/plugins/nggallery

2. Go to the web page http://www.jeroenwijering.com/ and download the JW Image Rotator and unpack the conent

3. Upload the file imagerotator.swf to the nggallery folder

4. Activate the plugin

5. Add a gallery and upload some images (the main gallery folder must have write permission)

6. Go to your post/page an enter the tag '[gallery=ID]' or '[slideshow=ID]'. See more tags in the FAQ section

That's it ... Have fun