Steps for windows 7 upgrade dual boot xp?

Insert your windows XP installation disc in the disc drive, then just boot the computer from your disc.Remove all the existing partitions from your hard drive. Create one new partition of your desired size in the megabytes. Depending on the intended usage for XP, you may even want the partition of 20,000MB or more. Install the XP to your new partition. Insert your Windows 7 installation disc into your disc drive, then just boot the computer from your installation disc after the windows XP which has finished installing. Create the second partition on your hard drive of your desired size. By default, your new partition size fills the remaining free space on your hard drive. Install the Windows 7 to the new partition. The computer just restarts automatically when your installation is finished. Select which version of the Windows to boot with all the arrow keys on your keyboard when the computer starts up.