Labeling Connection Points

Is it possible to EASILY (I am very new to Visio) add text to both
ends of a connection between two shapes? What I am trying to build is
a diagram that has multiple devices (routers) that are connected
through dynamic connections. I want to label each end of the
connecter with the port that the other device connects too. I have
been able to label the connection as well as move the text to either
end of the connection, but I am unable to add a second text box to the
connection. What I am doing now is adding a text box that is not
connected to the link. The problem is that once I move the device the
links reroute appropriately, but the second text box that is not
attached needs to be moved manually. BTW, I am using v.2003 if it
makes a difference.

Thanks,
Tom