nabeelimran, so you mean I have to first extract the four files using WinRAR or a similar application and burn those extracted files onto a DVD and then run the DVD? I get what to do. What I don't get is how to burn a bootable ISO image on a DVD and which software to use for that purpose?
ghostridermeister, I don't remember the exact web address from where I downloaded the OS but I just googled "Download Windows 7" and it was one of the results on the first page.