Guys Any way to connect my friends using WLAN(within 1 km).....mostly for sharing big files wirelessly.....because wiring for 1 km is impossible(so no way to LAN...then i have one choice..Yes wireless, so WLAN) 3 friends + 1(me)--Total 4 computer, my plan - one server in centre of 4 system will act as server(wireless server with big hard disk....so any one need to share file means he will put that in server....so every one will access from server) every suggestion is welcome.. Also i move across one product(WLAN bridge)--it will promise to connect within 50KM(Yes 50 km....not 50feet) wireless ethernet bridge......i contacted the manufacturer...Yes they replied instantly.....but they ask more question..Yes i answered, but waiting for their reply... This the link....
There is one important thing: optical visibility between you Access Point and theirs antennas. If that is achieved than probably everything will work.
I believe that is possible. And since you're doing wireless networking , make sure that there is no physical obstruction (walls, ceiling, metals ) between the computers and the wireless bridge.
Go for ubiquity, they have distribuitors all over the world. What you need is one acces point in the middle like this, and each of your friends a cpe. 1Km is no problem for this solution.