You can run SB.OS on your computer without having to install anything. To create a bootable DVD just burn the disk image with your favourite burning software to a DVD. To create a bootable USB stick use UNetbootin together with our disk image. All you have to do now is to change the boot device of your computer to first boot from your DVD drive (this is the default on most computers) or to USB. Insert the DVD/USB stick and boot your computer.
If you use the Live DVD/USB you can access and change all files on your harddisk (even if you are using Windows). Please make sure that you do not make any changes to your current operating system.