how do i create a backup cd for a pre-installed Windows xp.i do not have floppy disk and original disk not supplied.Hard drive is failing so have to back up

how do i create a backup cd for a pre-installed Windows xp.i do not have floppy disk and original disk not supplied.Hard drive is failing so have to back upyou will need a back up proogram, some free.http://www.google.co.uk/search?q=free+backup+software&rls=com.microsoft:en-gb:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGLT_en&redir_esc=&ei=9JIbTcqjKYSBhQeo-qm3Dg GOOD INFO http://www.techsupportalert.com/best-free-backup-program#Quick_Selection_Guide