You should probably read the sticky thread at the top of this forum:
http://www.wowinterface.com/forums/s...ad.php?t=42367
The only way to export data from an addon is by saving to the addon's saved variables file on logout/reload. If you want to do anything with the data outside of WoW, you need to look at the saved variables file and parse it yourself. You can either save it in a format that you can copy/paste into Excel with only minor modifications, or write a program to convert it to a CSV file or something.
If you're looking to pull data from the Armory and work with it, that's a whole other kettle of fish, and cannot be done by an addon.