What you need is to install the amule-daemon package on the server machine and run
$ amuled --ec-config
I'd recommend closing (using Ctrl+C) and restarting amuled in order for it to create all the needed files.
After that, you need to install the amule-utils-gui package on the client and just run amulegui that must be on your gnome menu, under the "Internet" section. You will need to provide the server machine's IP and the password you told amuled to use.