Creating Iso image of the files and folders is always helpful and what if you just need no extra tool to install to create one?
Folder2Iso is a free tool that can create an ISO image of the folder and its contents without the need to installation. Folder2Iso just creates an iso from any kind of folder (with the subfolders). The tool is quite small and can be run directly even from a USB drive.
Creating Iso images will come extremely useful to you if you want to preserve your important movies or games setup. What you need to do is just select the folder/files and create the iso image using this tool and burn it to the CD/DVD with any CD/DVD burner.