I am an aircraft inspector and mechanic, and work for the world's largest military and commercial aircraft producer. We have several types of engineers. It sounds as though you want to be a designer. Starting pay could be in the range that ebaines mentioned. Could be a little higher by the time you get to it. You can bet that it would be above average, and provide a good income.
But most importantly, you would be chasing your dream.
Again, like ebaines mentioned, you have to have good grades, especially in math and science.
A large majority of our engineers have gone to this school:
Embry-Riddle Aeronautical University - World's Leader in Aviation and Aerospace Education
Buckle down, and never forget your goal.
The aerospace industry is going to a different level now with new materials, like composites, and alternate fuels. You could very well be instrumental in it's future.
I wish you the best.