If your PC will boot the installation CD-ROM provided with this book (Disk #1 of the 3 CD set), then you already have all the boot media you will need.
If the CD-ROM will not boot on the target machine, see the instructions on creating boot floppies provided in the install.en.txt file located in:
debian/dists/stable/main/disks-i386/current/doc/
The
rescue disks are a 2 floppy set of a separate boot and root disk. In order
to get to your CD-ROM you will most likely need the additional 3 floppy set
of disks that hold the various
drivers needed by the kernel to access the
different kinds of CD-ROM devices that may be installed on the target machine.
With these floppies installed, the rest of the installation data can be accessed
directly from the CD-ROM.