When you know how, installing software is easier, than you can imagine.
You will have to use the "Package Manager" to choose a package.
Or the command line "Search" :
Suse : # zypper se <name>
Mandriva : # urpmq --fuzzy <name>
(K)Ubuntu : sudo apt-cache search <name>
But please tell, which of the Linux, you mentioned
in your other thread, you actually got installed !