scenario: we've one family computer that I want to trade from - I don't want to purchase a second computer my (young) children - And their friends also use/play on, with, the computer 1: how can I prevent a pdf file from being deleted ? 2: how can I prevent a file from being deleted ? 3: how can I prevent a folder from being deleted ? 4: can I prevent a program from being uninstalled ? 5: is there a way I can prevent the children from opening my charting/order entry programs - MetaTrader 4 and NinjaTrader 7 ?