Advice for a New Software Project Manager?

Tom O'Neill asks: "I have recently been promoted to 'Manager of Software Development' at the small business I work for. I have been developing web-based software professionally for about 6 years. I have seen the software development cycle work and I have seen it fail. Are there any project managers out there with some advice for a green horn like myself? Are there any books or other reading material that I could read in order to manage a software project effectively?"