You will need an external, or extra internal hard drive, preferably equal to the size or larger the drives you use everyday. I (For example) needed a 124 GB of free space to backup. Using DVD's or CD's will take longer and use many disks. E-Sata external drives are preferable, USB external drives are OK also although security is not as tight as E-Sata, internal drives are good also but you detach them after backup (Removable drive bay is a good way of doing it), as if they are detached electrical surges and viruses could infect your backup.
Order of preference:
External E-Sata drive (Requires an E-Sata connection)
Internal Sata drive (In Removable Drive Bay)
Internal IDE drive (In removable Drive Bay)
Internal Sata drive
Internal IDE drive
External USB 2.0 drive
External USB 1.1 drive
DVD's
The first thing to do is attach your preferred backup device and allow it to install, setup the device, allow Windows to install drivers.
To begin the backup click "Start"