Make a reference to the Excel Opbect Library and try something like this. .
..
Private Sub Command0_Click()
On Error GoTo Err_Command0_Click
DoCmd.TransferSpreadsheet acExport, acSpreadsheetTypeExcel9,
"QueryName", "c:\FileName", True
Dim oApp As Excel.Application
Set oApp = CreateObject("Excel.Application")
oApp.Visible = True
oApp.Workbooks.Open ("c:\filename.xls")
Exit_Command0_Click:
Exit Sub
Err_Command0_Click:
MsgBox Err.Description
Resume Exit_Command0_Click
End Sub