How do you get pictures in animal crossing wild world?

To get your neighbors' pictures, you have to become best friends with them. Send letters with gifts. Talk to them, but not so much that they tell you that you're annoying. Do errands when they ask you. Get them furniture, fossils, bugs, etc. when they say. After about a month or so, wait 10 minutes and don't let your neighbors see you. After the recommended waiting period, go see them. They will have a "!" appear over their head. Talk to them and they might give you their picture. If not, try again.