Hi

I would need advice to start a small wireless neighbourhood ISP in
Beirut,Lebanon ,Middle-east
I'm implementing a Long Range Wireless LAN to 100 users that are
in my geographical area (300-400 meters), my budget don't exceed 6000$
The problem is that i can't use 802.11b because of the interferences
Which technology is better to use ?
if it's 802.11a, which brand is the most cost effective?
where could i find in the U.S a reliable manufacturer/or wireless
distributor/or value added reseller that export
"boosted wireless equipment" to expand the 802.11a signal(amplified
AP and antenna),knowing that in
lebanon there is no FCC..?
Finally ,I want to install an AP on the top roof of each building
and make a non wireless connection between 5 to 10 users PC and
the AP ; will the AP be sufficient to connect the wires or an
additional Hub is needed? what sort of cable and network card is
needed ?

thanks