| 
 I don't know why running the servers from the KDE file manager would not do anything, but I suspect that your command-line problem is due to the fact that the current directory (".") is not in your PATH.  Nor should it be (for safety reasons).  This is unlike the DOS/Windows world, where the current directory is inherently in the path.  Try running the servers as ./world and ./zone instead.
 You might also want to create a bin directory to put the executables and configuration files in.  But that's just my personal preference.
 |