The following code works correctly in Excel 2000, but not
in XP. The code allows a date to be typed without the
slashes, so 092104 returns 09/21/2004. Typing the same
date in XP gives me 03/02/2152. Is there a problem with
compatibility between 2000 and XP? I'm having problems
with several macros not executing properly in XP.

Sub Worksheet_Change(ByVal Target As Excel.Range)

' Macro add slashes for dates in Range E21:E1000,
' So date entry can be typed as 122503 but shows as
12/25/03,
' The date is formatted correctly so it can be used in a
calculation.

Dim DateStr As String

On Error GoTo EndMacro
If Application.Intersect(Target, Range("e24:e1000")) Is
Nothing Then
Exit Sub
End If
If Target.Cells.Count 1 Then
Exit Sub
End If
If Target.Value = "" Then
Exit Sub
End If

Application.EnableEvents = False
With Target
If .HasFormula = False Then
Select Case Len(.Formula)
Case 4 ' e.g., 9298 = 2-Sep-1998
DateStr = Left(.Formula, 1) & "/" & _
Mid(.Formula, 2, 1) & "/" & Right(.Formula, 2)
Case 5 ' e.g., 11298 = 12-Jan-1998 NOT 2-Nov-1998
DateStr = Left(.Formula, 1) & "/" & _
Mid(.Formula, 2, 2) & "/" & Right
(.Formula, 2)
Case 6 ' e.g., 090298 = 2-Sep-1998
DateStr = Left(.Formula, 2) & "/" & _
Mid(.Formula, 3, 2) & "/" & Right
(.Formula, 2)
Case 7 ' e.g., 1231998 = 23-Jan-1998 NOT 3-Dec-1998
DateStr = Left(.Formula, 1) & "/" & _
Mid(.Formula, 2, 2) & "/" & Right
(.Formula, 4)
Case 8 ' e.g., 09021998 = 2-Sep-1998
DateStr = Left(.Formula, 2) & "/" & _
Mid(.Formula, 3, 2) & "/" & Right
(.Formula, 4)
Case Else
Err.Raise 0
End Select
.Formula = DateValue(DateStr)
End If

End With
Application.EnableEvents = True
Exit Sub
EndMacro:
MsgBox "You did not enter a valid date."
Application.EnableEvents = True
End Sub