Am I too old to start my dream career?

well considering that like 40 percent of all college students change their majors in college, I don't think that's a big deal , but remeber don't put all your eggs in one basket and try to make all your money on designing the next myspace , odds of that are less than being a pro football player, but someone has to do it, if you have an idea, and have the skills , go for it, just be sure to learn you XML.