Using Excel or Access for relationship webs
 

I'm looking for a way, Any way (other than programming it myself), of using
excel or access to generate a graph that corresponds to the relationship
between a bunch of nodes. So, lets say I have names, and I want to make a
map of each node's relationship (say, as a colored line) to other nodes.

Any suggestions of add-ons, microsoft downloads, 3rd party products, that
can do that?