Air suppports PDF, Flash and HTML content. There may be third party components available for opening and viewing XLS / DOC, but given the complexity of Microsoft's file formats you should expect limitations. Try googling.
Here's an actionscript library on the exchange for reading and writing Excel files
-Marty [ http://www.theflexguy.com ]
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Thank you for your reply.
Now I no need to open the Excel and Doc inside the AIR application. But just I want to open a Excel and doc through MS office itself from AIR application. Please help me in this.