you have to "create" the password yourself

$ echo -n yourpasswordhere | md5sum | cut -d ' ' -f 1
^^this command will give you an md5sum as password, put this md5sum into your aMule.conf as ECpassword
btw: when you edit the amule.conf file, STOP teh daemon before that, or on shutdown all changes will be lost.
so stop -> edit -> restart