ChiragNS learnt some thing. but how does it work?
These 2 blog poast might help you to learn how it works on 2005 & 2000
http://blogs.msdn.com/sqlpbm/archive/2008/07/04/using-pbm-against-sql2k-and-sql2k5.aspx
http://blogs.msdn.com/sqlpbm/archive/2008/07/04/using-pbm-against-sql2k-and-sql2k5.aspx