E Question On Ports

I would like to know what the "ports" mentioned in kazaa really is? What it does and how does it work?
It seems like if i increase my port number the downloading speeds become faster and more stable, why is that so? Are there any risks increase the port number, in terms of security?

what the eyes see and the ears hear the mind believes
or in your case
what the mind wants to believe it believes :P
changing the ports makes absolutely no difference.