All right, first I will agree with Joeytpg. My apologies; hostility is not appropriate here. It's just that I've been on this board long enough to see witeshark post several false/skewed/nonesensical info, and it gets irritating after a while. However, you are correct that I once did the same as a kid...so I shouldn't be so judgemental.
As for whiteshark, you said "The main difference is that exploits can fully engage their task without aid by the target computer - or user.". This makes absolutely no sense, and doesn't agree with your last post. However, I'm going to drop it. It's just not important.
As for registry stuff, I'm a CS Engineering student, C++ programmer, and work as a Systems Administrator. I've written my share of active viruses and worms, for theory study and testing purposes. Thus, I can safely back up my point.
At any rate, this isn't a thread I'm going to participate in further.