Convert IIF to XLS

QuickBooks iif files can be opened using Microsoft Excel and saved as spreadsheets (.xls) without any trouble, which is what iif to xls conversion more or less is. You can do that by simply opening the .iif file using the Text Import Wizard and just saving the output as Microsoft Office Excel workbook. Change the file name to remove the quotation marks and the IIF file extension and Excel should  automatically add the correct XLS extension.