I'm not taking the piss! I was going to raise the Monkey point last Saturday, but then I saw all the piss taking from everyone else.
But I decided to dig the monkey debate out to prove like the Pyramids that some things just CAN'T be solved.
Mate, we didn't evolve from modern monkeys, though we share a common ancestor, which was probably some kind of monkey itself, or primate, at any rate. From that common ancestor, we evolved. The various different species of monkeys and apes that exist today also evolved, they just took a different evolutionary path to us. Evolution doesn't always work in a strictly linear fashion (ie from thicker creatures like monkeys to more intelligent species such as ourselves), hence the variety in primate species we see today.
I'm probably explaining it poorly, so here's a picture that should help a bit: