Hello
I make project with arduino board.
My project that to connect WIFI sensor to arduino board and to find out
some wireless.
Some one can tell me where I can buy this sensor?
link please 
tnx
you can check here: http://www.asynclabs.com/store?page=shop.browse&category_id=6&vmcchk=1
I have tried myself the code provided with a BlackWidow by asynlabs and works perfect (supports sockets, simple html posting, etc)