> Introduction
To upgrade your PC from Windows XP to Windows 7, you'll need to select the Custom option during Windows 7 installation. A custom installation doesn't preserve your programs, files, or settings. It's sometimes called a "clean" installation for that reason.
A custom installation is more complex, and it can sometimes take a couple of hours to complete. We created this five-step tutorial to help guide you through the entire process each step of the way.
What you need
An external hard disk. You'll need to move your files off of your PC before you install Windows 7. To make thi…