On a PC: Early on in the boot process, open your BIOS (most likely with one of the function keys), you'll be prompted on screen as to when to enter BIOS. From there, depending on your BIOS, it'll be in different places, but you want to find the Boot Order, and simply put the disc drive before the hard drive. Then save and reboot.
Go to start, then run, and usually your CD will tell you the steps and what to type in run. If your CD doesnt tell you, you can still go to run, then brose, then look in whichever drive your CD is in and you'll have options. Good Luck!
Ask_Sean Says, If you have "Windows Media Player" Go on that and click "Now Playing" And your CD playlist should be at the right side (so click on a song and enjoy! :D)