I started by running the Setup utility from my Windows 8 install DVD, which I made by downloading the Windows 8 64-bit .ISO image and burning it to a disc. If you purchase Windows 8 from Microsoft's website, you can use the old Microsoft Windows 7 USB/DVD download tool to make a bootable Windows 8 flash drive. After I popped the disc into my FrankenPC, the setup utility walked me through the basic Windows preparation process, displaying the Windows 8 system requirements and giving me the option to download updates before finishing the install process, which was nice.
If you're concerned about enduring a labyrinthine installation process, rest easy: The setup wizard makes installing Windows 8 nice and simple. In my case, though, it was a little too simple; Windows 8 gave me the options of keeping all of the applications and data on my old hard drive, keeping only my personal files, or starting from scratch; but it didn't give me a chance to specify which drive I wanted to install Windows 8 on in the first place!
Of course I wanted to install it to my old Windows XP hard drive and not on my Windows 7 drive, but I went ahead and chose the 'Keep everything' option just to see where the setup process would take me. After spending a few minutes scanning my Windows 7 boot drive, Windows 8 Setup determined that I had two programs on my hard drive that weren't compatible with Windows 8 (the DisplayLink Core driver software and Microsoft Security Essentials), and it waited for me to uninstall them.
Windows 8 isn't the boss of me yet, so it doesn't get to tell me what to do. I knew I had to find a way to change where I was going to install the new OS, but the Windows 8 Setup utility is pretty sparse when it comes to settings or options. Nothing I could do from within the setup utility would allow me to choose the option I wanted (install to a separate drive), so I decided to quit the app altogether and then boot from the Windows 8 install disc itself to see if it would give me the same generous install options previous Windows installers did.