This might be interesting to you...

http://www.thinkbroadband.com/news/4212-fibre-optic-broadband-in-rural-areas-lyddington.html

A pretty extreme solution, but here in the UK several communities are making it work. It does however base itself on the regulation we have here in the UK and the access to the final mile it gives. Now if there is no final mile.....

Maybe useful to get a few ideas of the technology that is out there.

Cheers

Cris