To successfully use your CD key, you must ensure your system meets the era-appropriate hardware requirements:

For the boxed version, the serial number is typically located on a sticker on the CD/DVD sleeve or the inside cover of the user manual.

Windows 2000 (SP4) or Windows XP (Home, Pro, or Tablet PC Edition). Processor: Pentium II, 200 MHz or greater. RAM: 128 MB minimum (256 MB recommended). Hard Disk: 250 MB of free space for the main application. Why Users Still Search for Version 12