Create a spreadsheet in Excel with four columns:  WO prefix,WO suffix,QTY,WO Close Flag (Y or N).  Save it as a CSV file.  Import the file in WOP and presto you have a prepared list of WOs you can process through WOP.  Any invalid imported WOs will have a * in the "C" along with the error description.
 
Alternatively, you can create the same import file with a text editor.  It needs to have the same four columns that are comma delimited and there can be no spaces between the values and the commas.  
 
Mike