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im afraid the zipcode source on that site will require some manupilation before it can be imported. For example, you will need to open up the .csv file in excel (or other spreadsheet program), and remove the city, state, timezone, and dst columns completely.
Then, remove the header row.(zip,city,state,latitude,longitude,timezone,dst)
Sorry, but the import routine is as simple as they come, so you will then need to switch the order of the longitude and latitude columns as it expects the data in the exact order zip,lon,lat. So, at this point you will have 3 columns, zip,longitude, latitude ( in that order)
Next you will need to format he zipcode column. In excel, select the entire column (click on column header cell), then right-click, then choose format cells. Look through the types of formats to special, and frmo that list on the right choose zipcode. (not zipcode+4). This will pad all of the zipcodes to have exctly 5 digits. This is necessary for the zipcodes listed in the source data like 501 instead of 00501.
Then, save the file as a tab delimited text file and make sure it saves the file without any string delimiters like double or single quote marks. As an example, one row in the retulsting .csv file (if you open it up with a text edirtor like notepad) should look like:
10260 -73.977182 40.780751
Also, the upload of they entire 43k rows will take too long on most systems and will time out, so I suggest breaking the file up into 5k chunks (or even 1k chunks if it times out)
let me kow if these instructions help in dealing with that data. You might want to consider going to a commercial source of the data for updated information and more formats.
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