Enthusiasm is absolutely the most important thing. After that, self-confidence is the most important thing. Even if you don't feel like the confidence you need to muster is warranted, you need to muster it. Wilful self-conviction is one method. There is a saying, "Confidence is free." It's true... it costs nothing, but it is a psychological process to enable you to get it for free. If you are a juggernaut of enthusiasm and confidence, with great ideas to boot, and those kinds of grades, there is no reason whatsoever you can't get into Yale. The Ivy League is overrated. I know, I went to Dartmouth ;-) If you are into the west coast you might also consider Stanford... a great many very successful internet entrepreneurs arising out of there...
