Monitor network access to shared (and not shared!) files (Windows Vista)

I am running Windows Vista on an office network. I have a few folders shared, e.g. so I can share photos with others in the office that are in them, without sending large emails.

How do I monitor who is accessing the shared files? There are others in the office with no interest in; or rights to; the photos that I suspect are browsing my shared folders. I know I can restrict the browsing rights by user, but it is a pain to add 10 share permissions, and it is also too late; I want to see what has happened in the past.

I also need to see if network users are attempting to browse to other folders.

Ideally, I would like a system report of:

- Date/Time
- Remote IP and/or computer name
- Remote user
- Files/Directories attempted but failed access
- Files/Directories successfully accessed
- Actions; e.g. Read, copied to remote machine, deleted

Thanks.