FileAudit will provide audit trails for file access in Windows. Thing I like with this tool is that it is relatively cheap for what you get, and you get a tool that just does its one thing, and seems to do it well. Granted, Windows file servers can already do file level monitoring in the event logs by adjusting the auditing on folder properties. However, making reports and doing anything beyond onesy-twosy checks in the logs is not possible without custom scripts or additional tools to parse the logs out and correlate the data. While not free, and not even something I want to use right now, this is still useful to log for my own benefit sometime in the future if I am asked about this issue.