Gephi forums

Hi there!
I'm quite new with Gephi so please pardon me if any mayor feature in my question is overlook. I'm just not sure is the software is right for me.
I realize that Gephi is quite focus on data/network visualization and indeed with some dummy networks I managge in a few minutos to get quite cool looks.
But the problem I need to study is the evolution of a rather small number of networks over time. And I need to join the visualization software with the network creation, alteration and selection program.
Does Gephi have some way of creating a build-in C workspace to build and modify the nets and then visualizing some of them?
Having to import each net manually is not very efficient and I'm kind of noob programmer. Otherwise a solution would be a matlab environment for matrix manipulation using the Gephi for visualization, all contain in a C or Pearl space.
Maybe there is some toolkit that does just that.
What I need is to create networks as matrix and manipulate them, adding nodes or taking them away in an efficient way.

btw: Matlab tools for graph are very poor and the neural toolkit is input-output orientated.

Well any advice is most welcome and thank you in advance for your time