Cesar:
just select "Save as" and then look for the Excel option within the "Save as type" ones. You will then be asked to select the data to be exported, and you could select a pre-defined set of data or create one yourself.
By the way, I read your question on productivity. I am very interested in your results. I am living in Argentina, but I work on several countries around. Comparing productivity and cost is something I have to start doing in order to justify the investment in each country. Please let me know of your results, maybe we could exchange data.
Regards,
Idelin