Downloading and Burning Free BSD

[Roger Agraviador]

I clicked the ISO link and I was brought to a directory, this to be exact (
ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/ISO-IMAGES/7.2/)

Once I have downloaded all Iso Images do I burn the 'boot only.iso' file on
one DVD or CD only? or do I burn that along with 'disc1.iso', and how do I
go about burning the rest of the files in that directory once I have
downloaded them?