The first thing you will need to verify is that you have Microsoft Windows 98 or higher. To find out what version you have, minimize this window by clicking the "-" icon in the top right corner of the screen. Right-click the "My Computer" icon on your desktop. This will bring up a menu. Click on "Properties" on this menu as shown below.
When you click on "Properties" you will see a screen like the one below. It may be slightly different depending on your version of Windows(this image is from Windows 98). Listed just under the word "System:" is the version of Windows that you are currently running. This needs to be Windows 98, ME, NT 4.0, or 2000.
If you have a compatible version of Windows, click ">>".