Thank you for all the replies in this thread so far. It has been tremendously helpful for someone like me (haven't worked long enough to understand the ins and outs of career advancement).
But I think I've worked long enough to see that if I get stuck in a technical role, I'm not really going to get anywhere from a salary/influence standpoint. So I'm interested in reading and hearing the journeys of people who have made the transition into management from a technical position, and what they did to get there.