That's about all I know of either. However, I assume Astalavista adds some programs or hotfixes to his unattended disc. So, what if one were to add an email script to, say the Net framework or Sun Java's self extracting exe. Use some freeware info tools and a command line email program to email the Mac, IP, name, time, date, etc. to a predetermined IP address. You'd have to write the command line script, but I quite sure some freeware tools could do that. I don't know if Astalavista would want to persue this idea further, but it would give you a good report if somebody used your disc. EDIT: That assumes they leave it online when they run it.