So if ATP is neccessary to build a chloroplast, and the chloroplast converts light into ATP, then where did the ATP to build the chloroplast come from?
You require ATP for energy, too, Rob. If your body converts food into ATP, and ATP energy was required for you to grow, where did the ATP to grow you come from?
Your mother. In the plant's case, the seed from the parent plant.
Again, plants did not suddenly spring into being utilizing this process. They evolved from earlier organisms that also used photosynthesis, like the bacteria I mentioned. The first photosynthesizing organisms were likely forms of bacteria, in fact:
see here.
The very first photosynthesis would have occurred much like the first "life" - the right chemicals happened to be present, and the result was a chemical reaction that would continue to spawn similar reactions so long as the right conditions were present. Imperfections in the spawning process allowed for variation, which resulted in evolution, and eventually in the variety of life we see today. Life is just chemistry, Rob - no processes are "created," elements and molecules simply behave in certain ways due to the laws of nature. The right chemical compounds in the right environment will always perform the same reactions, and no intent, intelligence, or spontaneous creation is necessary.
I like the projection, though. Creationists assume spontaneous creation. Evolutionists do not, but creationists accuse evolutionists of doing so.
Every time a fundy breaks the laws of thermodynamics, Schroedinger probably kills his cat.