Hi, I am a teacher who found a student modified my picture with a threat. I am going crazy to find out who modified my picture. Here is the file. Where is the file header data? I know the file was modified on Oct 20, 2006. I need to know the user ID who modified the file?? Our user ID's on the network are 6 or 7 numbers (like 0100535). Where is that modified user stored in the file header? Thanks for any and all help on this.