Thank you for your response
Do I define the sheetname with a ! as follows?
DoCmd.OutputTo acQuery, "Qry 1 ", "MicrosoftExcelBiff8(*.xls)", "C:\My Documents\Customer\file!sheetname1.xls", False, "", 0
DoCmd.OutputTo acQuery, "Qry 2 ", "MicrosoftExcelBiff8(*.xls)", "C:\My Documents\Customer\file!sheetname2.xls", False, "", 0
Swifey