"I don't understand how some creationist can accept variation and not evolution. If animals "change a little at a time" (though mutations and variation) given enough time they will develop into new animals. It has everything to do about genetics, not what you as a human classify the animals as."

Variation or Speciation is completely different. Speciation would be like a a dog evolving into labs, retrievers, chiuawawa (sp?), and any other variation. Even a dog growing wings and losing some other trait. The main point is that no new information is added to the dna.

Macroevolution involves taking some simple matter and eventually evolve into something much more complex. It would be like taking a normal skateboard and turning it into a helicopter. Tons of information must be added for this to happen, and it is simply not possible.