backing up files

[RincewindTheWiz]

You have to make a copy of the files that are going to be changed by the patch. Usually this is mentioned somewhere, or it's the game executable, like "soa.exe" for Soldiers Of Anarchy for example. To make a copy, just select the files in Windows Explorer, right click on one of them and select "Copy", then point to somewhere else and then point where you want the copy (you can even use the same directory), right click and select "Paste".