The best I've found in my many years. At the very least it's like what you get with Windows XP when you view your photos in thumbnail or slideshow mode, but MUCH more features and very intuitive to use!
http://rapidshare.de/files/4663762/acdsee5.rar
Includes key generator.
password to extract: www.AvaxHome.ru
UPDATE: Sorry but the version 7 I had was not reliable and kept asking for an activation key. I thought I had it working properly. Well this older version still works great and only needs a serial number (generator is included).