Your spreadsheet should have 2 tables, 1) Stores and 2) Settings
For an example, see https://spreadsheets.google.com/ccc?key=0AtCvGbW6v202dF90eDZSamUtelg1Z1pvVFA4Q3RRRlE&hl=en_GB&authkey=CNmjwIEJ
Required fields in stores:
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Storename
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Address
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Lat
-
Lng
under progress