Good post, HelpMe. Do you have a link?
Any farmer or animal breeder will aknowledge that selective breeding (human manipulated Darwinian selection) can produce changes in a breed line. Once you aknowledge the posibility of change then you've shot down the whole contention of creationists that even in the event that change does occur it can't produce a whole new species. If an offspring differs from the parent, no matter how small the difference, given sufficient generations an entirely new organism must needs be produced.
Of course, if you maintain that the world is only 9,000 years old you could, I suppose, logically contend that not enough time has elapsed for special change to have occurred.