hesham ACCESS: USAP Senior Member Joined 26 May 2006 Messages 33,768 Reaction score 14,027 30 July 2008 #1 Hi, http://www.ijee.dit.ie/articles/Vol13-4/ijee950.pdf Attachments Regional.JPG 34.6 KB · Views: 98 untitled.JPG 25.9 KB · Views: 88