Help on our final year project- please reply quickly

Hi ,
We are developing a project under our university course. We are novice in the field of communication.We developed a web site & we want to deploy the updates of that websites to our client.
To deploy updates we provide hand held embedded device to
clients. We assume that all our clients are within 1.5 km range.
Currently we have an ebox2300. We think that we use this device to
receive updates from website through GSM network (mobile phone
network)& then updates will be deployed to hand held devices through
WI-FI network. That is, ebox 2300 is connected to GSM network & local
WI-FI network . We want to know whether doing all these is possible
using ebox and if not what changes need to be made to ebox?

Which IEEE standard for WI FI can we use to cover range of
1.5km ?Is it possible to use IEEE802.11 b for this?
What type of WI FI transceiver can be used for Hand Held
end device here?
Remember that cost is a great factor in this project.
Please give necessary information & links.

Thanks in advance
Babu

hahahaha is this a joke? you want everyone to gather your info for you? are you going to ask us to build it for you to?