Ok personally I think a movie is not a good Idea, Why you may ask? well think about it you sit there and watch the movie, don't say a word to eachother until it is over then the date is almost over, take her somewhere you can sit and talk, so you can get to know eachother, take her to a coffee shop, or how about planning a picnic ( weather Permitting ) there are so many things you can do that will not cost you a bunch of money, or maybe you could kick mom and dad out for the evening ask them to go out for dinner and see a movie and cook her a nice dinner, girls really like that stuff. Here is a little hint for ya as far a conversation goes: she will be as nervous as you so any topic you bring up she will listen, if all else fails talk about cars, try to explain to her what she doesn't understand about them, and most important of all ask her questions about herself, get her to talk about her it will show her that you really want to get to know her.
GOOD LUCK!