Adding to Mike and Peters posts, you will need to write your data back to the HTTP Stream and give it a type of application/vnd.ms-excel or application/vnd.ms-word. hth.
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I will only tell you how to do it, not do it for you.
Unless, of course, you want to hire me to do work for you.
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Read this if you want to know how to get a correct reply for your question:
http://www.catb.org/~esr/faqs/smart-questions.html
^^Took that from planoie's profile^^
^^Modified text taken from gbianchi profile^^
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