VirtualBoxes – Free VirtualBox® Images Ready-to-use virtual machines for open-source operating systems Images for several CentOS flavours are available. CentOS 5.1 Size (compressed/uncompressed): 620 MBytes / 2.53 GBytes Link: http://downloads.sourceforge.net/virtualboximage/centos-5.1-x86.7z Active user account(s)(username/password): root/roottoor, centos/reverse Notes: GNOME desktop environment,