Location of the installation eg /opt/ltsp (This is the default for ltsp 4.2)
Set your http and/or ftp proxy if you have any
Installer
This portion of ltspadmin automatically detects if the packages are installed or not and also if it requires updating. In either case, it will download from the location specified previously
Distro specific
ltsp-utils is part of the extras repo. yum install ltsp-utils