with the windows install you go into the bios on boot up of the pc and change the boot order from hard drive to cd-rom and put the windows cd into the cd-rom drive. when you boot from the cd-rom you get a message hit any key to boot from cd-rom. if the new hard drive is blank and not partitioned windows will make two a system restore and a data one for you. if the drive vendor has made a partion you have to have windows delete it and then make the ones needed for the os install. with the os install it just ask for some simple info like your languge and time zone and the windows registration number. it take 10-20m for the installer to run...it reboot in the middle after it installs what it needs to your hard drive. on reboot dont hit any...