How do I install WIndows :o

You can either do that or buy a key from someone. I sell MS keys also.

Use a bootable usb creator. If you have an MSI motherboard they have good tools for it (like Win 7 tools)

stop commenting on this, this is a year old thread.

You can install it using a bootable Pendrive ....!!

ISO -> CD -> Install

Put it on a CD, get a hamer, hit the CD with the hamer, smash the CD inside the computer, hit the computer one more time with the hammer, put it inside a microwave, hit it again, power it.