You have been taught that evolution and creation are mutually exclusive Rich. This belief is shared by the majority of creationists as well, I will admit. But evolution can occur around design. Vestigial structures are easily explained this way. It is like a mechanical designed system losing function with age.
Mutations can and do occur in designed systems.
Variation and natural selection can occur around designed systems. However, when it comes to novel biochemical pathways coming into existance, evolutionary theory falls short. My interpretation is based on the evidence Rich, your is based on prejudice. Different biochemistrys alone is not what I claim as design, it is clear that it is possible for some changes in biochemistry to occur. ANd the difference between species in many cases is not a big change in biochemical pathways.