And you've tried what?
Use the Write to Spreadsheet File. It will create a text file using tabs as delimeters for the columns.
If you really want to generate an Excel workbook then you will need to either buy the Report Generation Toolkit or program Excel yourself using ActiveX. You can find lots of examples to do so in the Excel thread. NOTE: DO NOT POST QUESTIONS IN THE EXCEL THREAD. It is a thread for links only.