I am running XP Professional, and there is only one active account setup (mine). I have my screen saver set to go on after 20 minutes, and it is password protected. I never turn off my PC and rarely reboot. I noticed in the Event Viewer that there is a "Security" tab. Now what I would like to do is quite simple, although I don't know if it is possible. I want to monitor login attempts, no matter if it is logging into Windows, or the password protected screen saver. The reason I want to do this is quite simply because I want to know if anyone is trying to access my computer when I am not around (such as visitors to my house (friends/family)). If possible, without using any third party applications, please let me know. Thank you.