Everyone knows how to share drives in windows but I was wondering if this can be extended in such a way that users could log into the drive and only update specific files. for example lets say you and your brother wants to play a game, you both install it but it takes up alot of room so you install it to one computer only. but when you try to run the game from that one computer over the network your settings files keep overwriting eachother and problems ensue. I am wondering if there is a program where you can do the same thing but each user has his or her own login which means when you try to write to a file it instead makes a copy of the file you wish to overwrite and updates it only for that user (say a settings file) but does not touch the original file so other users can still access them or change them to fit there own settings. Has anyone ever heard of a program that can do this or a setting that can be changed? It would greatly reduce redundancy for my comptuers at how with programs files music etc.