Find, copy and rename duplicate files

Hi,

I'v tried a bunch of apps that tries to accomplish the below with no luck:


Situation.
- Old Photos and movies are scattered across 5-6 external drives
- Some of these drives have mac os x data, so I connect to them from my win7 as mapped drives via my mac (cannot access them directly via win7)
- Need to run a search on all images (including raw) and movies across the mapped connected drives
- Need to copy all these files on my win7 internal drives (***Important duplicates should not be overwritten rather renamed with a prefix or suffix while pasting into new location)

The only program I found that flattened the drive (removed subfolders for easier sorting) would overwrite filenames rather than rename them. I understand that this will induce duplicates but I had a habit of calling files the same name so I would have to sort thru them manually.

Any input highly appreciated.

Thanks