I don't know how to get my NPC talking. I've created an NPC - I've assigned him my own custom Voice Type - I've created him a Quest. I've made him a Greeting topic and a Goodbye Topic, along with their own respective response texts. But whenever I try to talk to him, he isn't speaking.

I haven't created any of the Player's Dialogue options as I would need the Conversation Editor, and I guess the Conversation Editor does not come with Fallout 3's GECK. Is that what is stopping me from entering conversation with the NPC?