CD ROM log file

This would require writing a NTFS File System Extension. There is no event that tells you when a file is being copied vs read normally since they are the same operation. You'd be loggin ALL access to the CD instead of just what is copied.

Writing something like this would be very difficult to do in C#. I better candidate would be C/C++ since you'll be writing driver level stuff and that support is all writen in C.