I do not think that the OP's intention is to troll, or to figure out work arounds but points have been made.
@theOP,
It goes without saying that you lack understanding in how malware works. Nobody is going to change your share folder locations, as they would have nothing to do from that point. To design a program that goes that far would be useless as P2P programs only share what you want them to. Just because the target is your entire HD for example, doesnt mean that the program will just start handing that out. So, a program that changes the location would be a waste of time. Not to mention how little interest anyone would have in your personal files.
Let me put it this way. It would be so much more simple to create a program that grabs your browser cookies and gives them to me then to rely on random files. If I where creating that software, I would have a goal in mind.
That being said, please stop worrying about this. If you believe that you are infected, you know where to go.
-Draygoes