[CentOS] installing centOS5.5

Want to install CentOS 5.5 by burning the image on DVD. On the link:
http://mirrors.hns.net.in/centos/5.5/isos/x86_64/, there is a list given.
CentOS-5.5-x86 64-bin-DVD.torrent is in the list. So is the download of the
.iso possible only through torrent?
There is CentOS-5.5-x86 64-netinstall.iso Is this also an .iso which one can
download to install CentOS5.5?
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