I wouldnt worry about old games. i dont believe there's a company or body that checks for anything other than newer AAA titles.
I should make you aware that some pirated games are created into whats called bin/iso. They require a program that tricks your computer into thinking there's an install disc setting the game up. I believe Daemon tools is the one i've used recently.
You have to "mount" the game to a fake dvd/cd-drive in your computer. it's kinda funny how it works lol
Yeah I remember something about that **** wwhen cd burners first came out...