The Unofficial Guide to Ethical Hacking
Network Security: A Hacker's Perspective
The Ethical Hacking Guide to Corporate Security
I'd stay away from these ones. The book Hacking: The Art of Exploitation is actually quite good. In addition, some specific OS security you might want to take a gander at the Hacking Exposed series or even Microsoft's security books (for each OS).

I have to agree with chsh in that you will find that it might be necessary to widen your view a bit. (e.g., firewalls, IDS, wi-fi security, etc.). And don't be afraid to look online, not just at Antionline. SANS reading room actually has quite a few good papers that might be what you're looking for (I think you need to register to access them but that's free IIRC).