Sure, SortField Object in the Excel 2007 Developer Reference. You can also get to it from within Excel.

>I don't understand the following coding,
>is there any document (msdn Language Reference ) explain the usage of Sort.SortFields.Add function?
>
>

>WITH oSheet.Sort
>	.SortFields.Clear()
>	.SortFields.Add(oSheet.Range(oSheet.Cells(1,lnCol2SortOn),oSheet.Cells(lnLastRow,lnCol2SortOn)), ;
>			xlSortOnValues, xlAscending, xlNo, xlSortNormal)
>	.SetRange(oSheet.Range("A1", oSheet.Cells.SpecialCells(xlLastCell)))
>	.Header = xlYes
>	.Apply()
>ENDWITH	
>

>
>Thanks,
>Derek