How can we make church "new comer" friendly?

How can we help make church welcoming for the new comer? I've been thinking about how to lead church. I generally begin with a famous challenging quote by a Christian related to the talk and also talking about my weekend, however I know I have a long way to go and can use all the help I can get. I was at a conference recently and they talked about the massive increase in church growth we would see if all those who visited our churches were well received, looked after, welcomed and became part of the congregation.