I'm looking at setting up a wireless network with my brother, mainly because he has DSL and I don't (I'm on a different line and it is not available.) His house is in line of sight, but about 475-500 yards away. His network consists of a router and two PCs. My network consists of a 5-port switch and two PCs. To make it easy, I'm looking at purchasing two Linksys WAP54G units and bridging them together. I'd like for his router's DHCP to supply my PCs with IP addresses. Since his equipment is in a closet, I'll need an omni-directional antenna at his location to get the signal out of the house. I'll need a directional antenna at my location to transmit over the long distance. My question is -- what antennas should I be looking at? I've been looking around at different antennas, but have not seen any details on transmission distance. Should I be looking at 15db units, 19db units, or higher? Thanks.