is it possible to connect two freemind elements with a line (e. g. an arrow) like shown on your page: http://freemind.sourceforge.net/FreeMind-learning-german.png?
Click on a node. Hold down the control and shift keys. Drag from one node to the other. A line will be created. Right licking on the line will enable you to delete it or change its color. The is also a menu option on do this is RC2 I believe.