Yeah I've progressed a bit further in what I know about it, I don't think it will be possible for me to give a few statements with equations that explain the reasons behind this problem.
I think most of my time now will be spent looking into what renormalization means, I have a few explanations on it from Michio Kaku's "Hyperspace" book.
Basically the reason for me doing this is to give a 10 minute presentation on string theory, but I've deviated away from that now towards this particular problem.