Okay, this is my last post on this thread, I swear! I'm just so excited to see so many sorority women who were engineering majors!! When I joined Theta I never thought that I would be able to 'advance my career' or 'network' because... well... a woman in engineering is rare, but one who is also a sorority member? I thought that was pretty far-fetched.
Anyhow, when I went through recruitment, one of those repeated quesitons is "So, what's your major?". When I said engineering, I got one of two responses: 1) The girl got really wide-eyed and nervous, and from that point on it was like it was impossible for us to have anything in common because I was in the sciences. 2) The girl is a little nervous, but pushes on and starts asking questions like "Really? Why did you choose engineering/what do you plan on doing with your degree?". The chapters I recieved option 2 at were eventually the ones I preffed. I think the best way you can help your self in this situation is giving as much information as possible. Instead of just saying "Oh yeah, I'm engineering" which may make you come off as a smarty-pants, you could respond with "I'm an engineering major- I took a real interest in roller coasters/space shuttles/other real-world experience in high school". This will probably lead onto other conversations.
And, on the flip side (which has already been mentioned), you will meet lots of engineering majors, guys and girls, who will resent you being in a sorority. Some will think that you are a straight-up party girl and will not want to study. This is your time to shine, though- show everyone that sorority girls CAN be smart and studious, and this will make a great name for your chapter. Same goes for doubting professors- don't be afraid to wear your letters to class.... just make sure you always get there on time.
Good luck!! I hope you share your recruitment with us on the boards!!