title: read_table pandas python numeric error
body: <p>I am doing a basic <code>pd.read_table</code> of a <code>.txt</code> file.  The first column is a list of cusips.  The cusip <code>"65248E10"</code> is being read as a number <code>65248E10 = 652480000000000</code> (E10 as scientific notation).</p>
  
  <p>I have been going through the pandas but I can't figure out how to require it to stay as a character.  <a href="http://pandas.pydata.org/pandas-docs/dev/generated/pandas.io.parsers.read_table.html#pandas.io.parsers.read_table" rel="nofollow">http://pandas.pydata.org/pandas-docs/dev/generated/pandas.io.parsers.read_table.html#pandas.io.parsers.read_table</a></p>
  
  <p>Also, even if I put header = 0, it seems to be putting the first row as the headers and then row 0 is the second row and so on.  If my text file has no column names, how can I get that to default to NULL (or 1, 2, 3, etc.)</p>
  
  <p>Thanks for the help.  I am new to pandas/python</p>