creating links in network for begginers

[kiler40]

Hello folks,
there is something i want to accomplish but i`m not quite sure how to do this... (but it has to be posible)

In the file i have shown my "network".
actually it is an electrical grid with end devices. the numbers are the name of the devices.
Blue line represents the trace/architectural link, and "nods" that i imagine them as "routers"...
i have an excel file that represents the links between the end devices but i don`t have the full trace

emagine it like this

device 100 links with device 200

"100-200"
but represented visually it will be

"100-nod-nod-nod-200"

Ok why i`m asking. I want to rollover my mouse to a edn point and see all it`s links.

I can have the links represented as a interactive GRAPH but at the end looks something like this
http://www.leda-tutorial.org/en/unofficial/Pictures/LOVELayers.png

and you can imagine, it is a big mess

So my question is: is there a way to use this (or of course improved) visio file, to do the visualization of the connection...

Sorry if my question WAS AGAIN not so clear... but i`m new to this things...

Thank you,
Andrei