Hi Tam,
I am in a similar situation but possibly worse as i no longer
live in the uk. Am living in a small community in eastern
europe and business ventures, even employment is difficult.
I have been toying with several ideas but there is one that i
am still developing which may be of interest to you.
I run a small pc network at home, my two laptops have built in
wifi, and i added wifi to my desktop pc, so they are all
connected wirelessly!
Now i did not need to add a wifi router as mine are all built
in, but if i did i could broadcast further, and with a booster
and good antenna, even further still. I believe 200 metres is
about right with an external router, and more if amplified.
Now, i have a brochure here from a company called air live,
ovislink corp, and they offer all sorts of pc products
including a router intended for hotels. The idea is that
guests can buy a card from reception which gives them x amount
of wifi access on their laptop.
It also allows the provider, ie the hotel the ability to
display a home page. 
So my initial idea was to feed out my internet connection at
home by wifi and put prepay cards in local shops. I could even
ask local businesses to house repeaters, which would further
my coverage.
But i have since expanded on the idea.
If i can add a homepage and maybe my own site to the broadcast
signal,that means people would pick up my homepage which could
include local gossip, maybe news and local people,
competitions etc.
It could also provide a list of local services and businesses.
With or without also providing web access! I have downloaded a
server programme, and have a web building programme which i
would be happy to email to anyone interested, and can also
provide details of what i consider would be an appropriate
router. Anyone who is maybe more technically minded than me
(former electronics engineer, but a messy knowledge of pc's)
may understand the viability or problems of such an idea, but
i welcome any comments. Finally, costwise it would not cost
much to set up, these routers are around 100 pounds, i can
send free the server and webbuilder programme, so most of the
cost would go on local advertising, which shouldn't be much.
What do you think?