Thanks, although this site looks like it hasn't been updated for a few years, does it work on 7 & 8?Duplicate Photo Finder. I think I downloaded it naughtily years ago and haven't tried another since. There may well be freeware alternatives though if you're feeling guilty.
Thank youYep. Anything that works in Vista will definitely work in later versions and anything that works in 2000 or XP will almost definitely work in later versions..
None do what you want though, you still end up having to spend ages checking because you don't trust the program, or maybe thats just me. Some compare the images and the size and filename but none seem to get it perfect.
Lightroom finds all of your images on a drive so you can put them into one folder, I found that useful before running a duplicate finding program Edlar.