Auto add space and / when I press space bar in excel 2003

I want to write a macro in Excel so every time I hit space bar (when I'm in column I ) I want to automatically send "space slash and space again".

eg. Im in cell I150. I type 00123 press space bar on my keyboard and instead just blank space, I want to get space slash space again so I can finish my data.

I want this to happen ONLY when im in cell on column I.

Thanks

Thanks, I found one more solution:

Private Sub Worksheet_Change(ByVal Target As Range)
    If Not Intersect(Target, Columns(9)) Is Nothing Then
        On Error GoTo bm_Safe_Exit
        Application.EnableEvents = False
        Dim rng As Range
        For Each rng In Intersect(Target, Columns(9))
            'make safe anything that already has been changed
            rng = Replace(rng.Value2, " / ", ChrW(8203))
            'change new spaces
            rng = Chr(39) & Replace(rng.Value2, Chr(32), " / ")
            'try to repait Excel's auto-date-conversion
            If IsDate(rng) Then Application.Undo
            'restore the safeties
            rng = Replace(rng.Value2, ChrW(8203), " / ")
        Next rng
    End If

bm_Safe_Exit:
    Application.EnableEvents = True
End Sub