I have used the 'Read From Spreadsheet' function to read the file but the string data are rendered zero whendouble type read is selected and vice versa for string type read with the doubles.
You may find it more straight forward to read the CSV file as text (Read from Text File) and then manipulate the data as you see fit. You can convert each line to an array of strings using 'Scan String for Tokens' or the OpenG VI 'String to 1D Array' or similar techniques. This should get the data (as strings) into a 2D array which you can convert and manipulate at will.
Hope this helps.