My password is not the default, I have PC Tools for extra security, I have 2 laptops, one XP, one Vista, I have used Vistumbler 8.1 and noticed his mac address is the same as mine when I do ipcofig/all and when I am on my netgear page that ip mac address shows up under my puter name under attached devices. Can he have the same mac address as my network Atheros card? I did receive tons of logs whether some tend to believe or not at first all the time now I seem to get them when the last number of the router ip is the same as one of my laptops. I can tell you his apartment has 2 rooms full of puters. My IT guy from work has helped me to learn about my router and the security and I use wpa-psk and have changed my network name and password often. I have only allowed 2 ip's .2 to .3 for DHCP Server. The router doesn't have wpa2. I am thinking about investing in another router and wondering if that will help and what kind would be the best for security. The big thing that confuses me most is occasionally getting his logs. As far as hard wired(sorry don't know the term for it) he might have some cable wires in his apartment but don't know if you could hookup a modem and router to them or if they are live wires. My cable company hasn't been very helpful at all.
I am still reading about all of this and want to thank everyone for their replies.