It sounds like kaffine and freecraft are not the proper names of the packages. Just incase, do an apt-get update, to make sure you have your packages loaded. Also, make sure you have the proper privliges for apt-get if not, it won't let you get the packages.

As, like tdjokic, use a graphical package manager to get the packages you need, it'll show you all available packages and descriptions, you can do this by either kpackage or synaptic, both are great. if you have them installed, just type them in the run command. If not, use

apt-get install kapackage
apt-get install synaptic



SD