新手报到，请问一下，debian系统下载，要下载哪几个ISO？

在http://cdimage.debian.org/debian-cd/5.0.2/i386/iso-dvd/页面：
Index of /debian-cd/5.0.2/i386/iso-dvd
Name Last modified Size -------------------------------------------------------------------------------- Parent Directory -
MD5SUMS 29-Jun-2009 19:45 369
MD5SUMS.sign 30-Jun-2009 12:48 197
SHA1SUMS 29-Jun-2009 19:45 417
SHA1SUMS.sign 30-Jun-2009 12:48 197
debian-502-i386-DVD-1.iso 28-Jun-2009 17:19 4.4G
debian-502-i386-DVD-2.iso 28-Jun-2009 17:22 4.4G
debian-502-i386-DVD-3.iso 28-Jun-2009 17:25 4.4G
debian-502-i386-DVD-4.iso 28-Jun-2009 17:29 4.4G
debian-502-i386-DVD-5.iso 28-Jun-2009 17:30 1.2G
debian-update-5.0.2-i386-DVD-1.iso 29-Jun-2009 15:02 2.1G

这几个ISO文件要全部下载下来吗？？