On the PC

• 1). Insert the Windows install disc into your PC. Click "Install Windows" when the window is loaded.
  
  
• 2). Select the updates you wish to install from the list provided in the next window. Microsoft recommends that you choose to install the needed updates to ensure the security of your computer and speed up the installation process.
  
  
• 3). Type in your product key that came with your Windows install disc.
  
  
• 4). Accept the license agreement. When asked what type of installation you would like, click custom (as you cannot perform a straight upgrade from 32-bit Windows). Select your hard disk as the location to install Windows and click "OK."
  
  
• 5). Allow Windows to install itself. Your computer may restart a few times during the process. When it is finished, you will be presented with the normal Windows logon screen.
  
  

On the Mac

• 1). Place the Snow Leopard install disc into your computer.
  
  
• 2). Double-click the install disc and then double-click "Install Mac OS X." Click "Continue," and then agree to the license agreement. Select your options on the next screen and click "OK." Enter your admin password to start the installation.
  
  
• 3). Allow your Mac to finish the installation. Your computer will reboot with a fresh copy of 64-bit Snow Leopard installed.