PHP - excel con php

Hola a todos,de nuevo tengo un problema.
Necesito abrir ficheros excel con php y no se como hacerlo,la idea es que al pinchar un boton de un formulario de php me aparezca una ventana de excel con diferentes pestañas de formularios para abrir el que yo quiera,los formularios ya estan creados y se accede a ello mediante una base en access,lo que pasa es que estamos migrando esa base a php y necesito que esas hojas excel se abran tal cual estan al pinchar en el boton del formulario php.

Muchas gracias a todos!!!!

checa esto

http://sourceforge.net/project/showfiles.php?group_id=99160&package_id=106368

http://prdownloads.sourceforge.net/phpexcelreader/Spreadsheet_Excel_Reader.zip?use_mirror=umn

Gracias por tu ayuda,estoy mirando lo que he descargado de la dirección que me has mandado,pero no me entero muy bien,si pudierais mandarme un ejemplo o una explicacion de como usarlo lo agradeceria mucho.De todas formas gracias

Saludos!!!!!

He conseguido que se abra el archivo pero en vez de abrirlo como el excel que tengo lo abre en un formato con todo descolocado,tal cual lo pongo a continuacion :

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