Get a Linksys WRT54G and put it in bridging mode. Buy/make a directional antenna and connect to the guy's wireless. Then buy another router and connect to the WRT54G so you're running a double NAT. This way he'll never accidentally browse your network stuff and you'll never accidentally browse his network stuff.
I'm not going to touch the legal aspect of this conversation, just giving tech advice.
Useful link
http://www.dslreports.com/forum/remark,13859095?hilite=wrt54g+wds
I'm not going to touch the legal aspect of this conversation, just giving tech advice.
Useful link
http://www.dslreports.com/forum/remark,13859095?hilite=wrt54g+wds