May be from 01 Jan 2012
No. Not yet a member of the Schengen zone
Bulgaria is due to join the Schengen area in 2013.
Question asking at a wrong time. The Question was asked on May, 2012 about <is Bulgaria going to be a member of Schengen in March 2012>. Its October, 2012, Bulgaria still not a member of the Schengen pact
No, Albania is not a member of the Schengen Area.
No, Croatia is not a member of the Schengen Area.
No. Bosnia-Herzegovina is not part of the Schengen Area.
Possibly. The exact date is not known yet, but Bulgaria's agreement was that the country could join the Schengen Area no earlier than 2013.
No. Montenegro is not part of the Schengen Area.
Yes, The Netherlands are a member of the Schengen Area.
No , Russia is not part of the Schengen Area.
Yes Bulgaria just approved this. But not all the schengan countries are officially informed of this. So you will have a hard time to convince them.
Ireland, The United Kingdom, Croatia, Romania, Cyprus and Bulgaria are all EU countries that are not members of the Schengen area. Croatia, Romania, Cyprus and Bulgaria will join at some future date, while Ireland and the United Kingdom have an opt-out and they also have their own common travel area.