You may use standard Visio 5.0 utilities to portray distribution scenarios.
Procedure
Create the instances between which you would like to establish relationships or use a structure scenario you have already created.
Activate the Shape toolbar menu in Visio. Position the mouse pointer on a free area at the top of the Visio screen and press the alternate mouse button. Activate Shape.
Use the Line Tool function to draw a line to indicate a relationship between two specific instances.
Use the mouse to select the line. Use the Line Ends function to indicate the direction of the data exchange.
You can use the Text Tool function to write information next to an arrow.