pierre wrote:
CAN SOMBODY INDICATE ME AN USEFUL SITE ABOUT FINANCIAL EXCEL WHERE I CAN FIND
ALL FINANCIAL STUFFS AND OTHER EXPLENATION FORMULAS...???

LIKE : NPV IRR ect ect..................
please help

A search for "financial functions" in Excel 2007 brings up the following
as the first result:
A bibliography of financial, statistical, and engineering methods, which
is a listing of books.

A Google search will give you more than you can handle is one evening...

Bill