Excel Range

I have the following range selected in an excel spreadsheet

PHP Code:

Dim sel1 As Excel.Range key1 = "A" & intUpperSort key2 = "A" & intUpperSort + intRowSortRange - 2 key3 = "E" & intUpperSort + intRowSortRange - 2 key4 = "E" & intUpperSort sel1 = oSheet.Cells.Range(key1, key3)

how do i sort sel1 accodring to Column E Alphabetically Ascending?

thx
db