A "bot" is a computer program that simulates real life. Now you can consider Darwin Bots as its own operating system witch supports these little programs called bots within itself.
Now the real science is going on in the "Bots and Simulations" tab, "Evolution and Internet Sharing Sims" thats were we abserve and evaluate what the program codes for us.
Also "Leagues" in the "general" tab can be interesting, that’s were human programmers compete for building a better “bot”. But, computer created bots are also allowed -so I am trying to get my computer to evolve one that can beat the competition.
Jetto I suggest you download the most resent (stable) virsion of the program. And go through PY's tutorial on building and evolving bots.