I don't think anyone's trolling you, well, not maliciously anyway.
You might want to consider that asking a bunch of people with Asperger's how best to approach the opposite sex might have a humourous (or tragic, depending on how you look at things) consequences
If the age in your profile is correct, be patient. Bagging a ladyfriend is not a race, nor are you entitled to one.
Is there anything that you would feel comfortable doing together outside of classes? Lunch? Homework?
"Do you mind if I sit with you while we eat?"
Conversation will either happen, or it won't. If it doesn't, don't feel bad. You should be eating
If you and I have enough in common to share a diagnosis of Asperger's, this girl will probably be a better conversationalist than you any way. Wait for her to start a conversation, maybe?