Disclaimer: I don't have Asperger's, and I'm somewhat socially awkward anyway. This is just the best advice I have to give.
When you talk to people, ask them questions and then let them babble about themselves. Laugh at their jokes and agree with and elaborate on what they say. The 'decipher this social interaction' thread has a good example in it, when she's talking about how she responds to the guy. He says where he works, and she comments that his commute must be a pain. It's not a super insightful statement, but it makes the person talking feel like you're listening and you care. That's all a lot of people really want. Once you've made an impression on someone as a friendly person, you can start having less purposefully structured conversations - though giving others their turn to talk is important. (It's something that is VERY hard for a chatterbox like me.)
If you want to be proactive about the finding-a-boyfriend thing and you're very socially anxious, it might help to look online. I met my current boyfriend online, and I realized how intelligent and insightful he was during our IM conversations - where he was a lot more relaxed and himself than he is in person.