Making a bootable CD/DVD
http://www.google.com/search?hl=en&q=how+to+make+a+bootable+cd
Booting from the CD/DVD
On many systems the default boot order does not check the CD-ROM. To enable this, you go into your motherboard BIOS and find an option "First boot device" or similar. Change it to "CDROM", exit and save. Now the system should boot from your floppy.
If you have a SCSI drive, you will have to enable the adapter's own BIOS (option ist often called 'enable host bios') and also select the drive as Bootup LUN.
Now you have to select 'Boot Other' / 'Add-in PCI' / 'SCSI' or similar in your motherboard BIOS.