created new FPWD version: v 1.18

Made the following changes and also updated the figures with those sent 
by Boris. Thanks. -- Souri/Seema.

$Log: Overview.html,v $
Revision 1.18  2010/10/25 18:28:06  sdas2
added sec 2.1 to show the sample relational tables and in sec 3 addressed Soren's comments -- Seema/Souri