What is ISO file?
An ISO file is an image of a CD/DVD. Typically you would be able to use a burning program like Nero, or ImgBurn, to then burn that ISO file directly to a disk. How do I use .ISO files? Once you have downloaded an .ISO file, there are several possible options you can use to install the softwareTo burn ISO file into record able CD or DVD. You need to download ISO burner. You can get lots of free ISO burner over internet.
Here i am going to talk about FreeISOBurner, This is very simple to use and very small in size. You can download FreeISOBurner .
Free ISO Burner can directly burn your ISO and CD/DVD image file to CD-R,CD-RW, DVD-R, DVD-RW, DVD+R, DVD+RW,HD DVD and Blu-ray Disc, no need mount any "virtual drives" which emulate physical CDs or DVDs, it write any data directly.Insert blank or record-able CD or DVD and Open FreeISOBurner application. Then after select that ISO file which you want to record on your blank DVD or CD. Then after just click on Burn. It will take few time to burn and after completion DVD will automatically get eject.