I've already created a damn near spot on sim of Kasta Martinez, and whats cool about Sims 3 now, is that its an open world format,meaning the whole town lives and breathes along with your sim.So, basically, I create a sim of whomever,plop them into a house, then let the game's AI take over, and your sim goes about its life. If you decide you want to be simmerized, let me know, as creating them involves choosing hair,clothes,accessories,traits,jobs,etc.