OK, Norcent.... (I get off work in 20 min... will check back here when I get home)....
Just wondering... How did you come to the conclusion that it is your neighbor that is stealing wireless?
please list the router model name & info.
you will want to log into the router. To get the router's IP Address, open a command prompt (START > RUN > type 'CMD' hit enter), and type IPCONFIG. The DEFAULT GATEWAY is the router's IP Address. Type this into your internet browser. You will want to check the router's DHCP table info to see what addresses are being used, (maybe check the log too).... From the router config page, you can disable wireless, and the problem should be gone.... A simple step would be to unscrew the antenna from the router.