Well, it would've been nice if this "mind" had thought about how to prevent DNA mutations when it's being replicated, then-- that part's pretty poorly concieved. I can only hope the intelligent designer got fired...
DNA mutations are actually a very good idea, as evolution is a perfectly adequate system to ensure the survival of life. In fact, DNA mutations are absolutely necessary for the immune system, otherwise how would you get the variations in antibodies that combat the nasties that try to infect your system?
Baddog's specious statement, however, is pure bunkum. He is basically asking why adenosine should pair with thymine/uracil and why guanine can pair with cytosine and vice versa.
Baddog, you might as well asky why hydrogen should react with oxygen to create water. You might as well ask why radioactive elements decay.
Certain chemicals naturally react and form bonds with other chemicals.
Besides, which, Avida is a computer program that evolves programs that perform a specific task. Highly evolved specimens can be read and understood by programmers and yet they are not the result of intelligence.
The only reasonable thing for a theist to say is that God programmed the Universe the way a computer programmer does. The Universe itself is the machine he built and it works on its own without his help, because let's face it, God would be a pretty poor deity if he couldn't make a self-functioning, self-sufficient "machine".
It constantly amuses me when Creationists argue against Evolution, because they are basically saying, God isn't that smart. Well, if you don't want to believe in a smart god, then so be it. Just keep your beliefs private and stop trying to get them shoved into science classes.