Sub SelectFirstToLastInRow()
Set LeftCell = Cells(ActiveCell.Row, 1)
Set RightCell = Cells(ActiveCell.Row, 256)
If IsEmpty(LeftCell) Then Set LeftCell = LeftCell.End(xlToRight)
If IsEmpty(RightCell) Then Set RightCell = RightCell.End(xlToLeft)
If LeftCell.Column = 256 And RightCell.Column = 1 Then ActiveCell.Select Else Range(LeftCell, RightCell).Select
End Sub