I get a lot of e-mail from folks asking how they can maybe get a career doing voices for animated cartoons. I wish sometimes they could see how many of these inquiries I receive so maybe they could grasp how fierce the competition is. Anyway, a few years ago, I wrote up a FAQ on this subject and I have just updated it. If you're interested or if you know someone who wants advice in this area, here it is.
Pay particular attention to the parts where I warn you about not giving money to the wrong people; also, the part about annoying me with requests to hear your demo or refer you to an agent. You'd be amazed how many folks read that and then write me to ask if I'll listen to their demo and help them get an agent.