wrote :: 2005.12.15
Sub Macro1()
Selection.Borders(xlDiagonalDown).LineStyle = xlNone
Selection.Borders(xlDiagonalUp).LineStyle = xlNone
With Selection.Borders(xlEdgeLeft)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
With Selection.Borders(xlEdgeTop)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
With Selection.Borders(xlEdgeBottom)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
With Selection.Borders(xlEdgeRight)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
With Selection.Borders(xlInsideVertical)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
With Selection.Borders(xlInsideHorizontal)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = xlAutomatic
End With
End Sub

Sub Sample1()
Range("A1").Borders(xlEdgeBottom).LineStyle = xlContinuous
End Sub
Sub Sample2()
With Range("A1:C3")
.Borders(xlEdgeTop).LineStyle = xlContinuous
.Borders(xlEdgeBottom).LineStyle = xlContinuous
.Borders(xlEdgeRight).LineStyle = xlContinuous
.Borders(xlEdgeLeft).LineStyle = xlContinuous
.Borders(xlInsideVertical).LineStyle = xlContinuous
.Borders(xlInsideHorizontal).LineStyle = xlContinuous
End With
End Sub
Sub Sample3()
Range("A1:C3").Borders.LineStyle = xlContinuous
End Sub
Sub Sample4()
Selection.Borders.LineStyle = True
End Sub