Build a Virtual Trade Show

Build a Website with a permanent Virtual Trade Show hall with 100 Exhibit [login to view URL] booths can have same design & must have Personal one-one chat [login to view URL] Exhibit must have space to display two posters (product Info & Contact ) & one video. Only registered users should visit my website & exhibitors must only be able to access chat option with the visitors. It must look like [login to view URL] though 3D is not [login to view URL] Flash or HTML would do if the expenditure is low