Hi, if you have access to a DVD-RW optical drive (even an external one) then this is the best way to do it - you will need to download md5sumfree from
www.winmd5free.com to verify the md5sum is correct (you would not want to create a coaster!). I only use imgburn from imgburn.com - always choose the last mirror which is the sites own!
If you have a USB stick (8 Gb) minimum you could install using a USB installer such as Unetbootin for Windows or another one whose name escapes me at the moment.
Whichever method you use, you will need to change the boot order so that your DVD-RW or USB (removable HD is sometimes shown depending on age of BIOS) - Your notebook (laptop) should have a function key or other keyboard key to enable a one-time boot option where you have a menu and use your cursor keys to choose from which drive to boot from in order to install Zorin.