To download torrent with bitcomet :
Download Bitcomet : http://download.bitcomet.com/bitcomet/bitcomet_setup.exe
And then Download your torrent from tutorial page : http://www.gadgetspromotion.com/how-to-download-and-install-windows-7-for-fee-complete-tutorial
How to burn an iso on blank Dvd With free iso burner :
Download Free iso burner : http://www.softsea.com/review/Free-ISO-Burner.html