Dear Billy

Please try the following code in the click event of the commandbutton:

lcOldError=on("ERROR")
on Error oExcel=.NULL.
oExcel=GetObject(,"Excel.Application")
onError &lcOldError
IF isnull(oExcel)
oexcel=CreateObject("Excel.Application")
Endif
oEXCEL.workbooks.open('Excelfile.XLS')

&&Where excelfile is the file you want to open

Regards,

Steve.