Hi Rony,
Try these ...
How Can I Use the SQL Toolkit in LabVIEW to Retrieve Data from a Microsoft Excel Spreadsheet?
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/862567530005f09c862566ac0076c303?OpenDocument
SQL Example for Jet Databases (Excel and Access)
http://zone.ni.com/devzone/explprog.nsf/6c163603265406328625682a006ed37d/005e3041f004ec5a86256568000a837b?OpenDocument
SQL Demo zip.
http://zone.ni.com/devzone/explprog.nsf/6c163603265406328625682a006ed37d/005e3041f004ec5a86256568000a837b/$FILE/SQLDemo.zip
As far as I remember you can find some details in SQL Toolkit manual for G (if you don't have it, it's available for download from NI site).
Good Luck ... and Happy Holidays!