Main thing is that you want to open your BIOS and make sure that your CD drive is in the boot order before any HDs. You access BIOS by rebooting and pushing one of the Fn keys. If you see the splash screen for the installed OS, you waited too long, reboot and go quicker with the finger. Which Fn key you use depends on the BIOS installed. Once in bios, look for the boot order. Depending on your intentions, and the capabilities of your BIOS, you might have, e.g.: floppy -> USB -> PXE (booting from network over ethernet) -> CD1 -> CD2 -> HD1 -> HD2. Once you set it up, save the config, insert the CD and reboot. Should come up. Again, some BIOSes cannot handle CD as a boot device.

jd