Change an Excel macro to work in Word

I came across this macro online. It is for Excel. I wanted to run it in Word but have no idea what needs to be changed. Any help would be greatly appreciated.

Sub Mail_Workbook_2()
'Working in 2000-2007
Dim wb1 As Workbook
Dim wb2 As Workbook
Dim TempFilePath As String
Dim TempFileName As String
Dim FileExtStr As String

Set wb1 = ActiveWorkbook

If Val(Application.Version) >= 12 Then
If wb1.FileFormat = 51 And wb1.HasVBProject = True Then
MsgBox "There is VBA code in this xlsx file, there will be no VBA code in the file you send." & vbNewLine & _
"Save the file first as xlsm and then try the macro again.", vbInformation
Exit Sub
End If
End If

With Application
.ScreenUpdating = False
.EnableEvents = False
End With

'Make a copy of the file/Open it/Mail it/Delete it
'If you want to change the file name then change only TempFileName
TempFilePath = Environ$("temp") & "\"
TempFileName = "Copy of " & wb1.Name & " " & Format(Now, "dd-mmm-yy h-mm-ss")
FileExtStr = "." & LCase(Right(wb1.Name, Len(wb1.Name) - InStrRev(wb1.Name, ".", , 1)))

wb1.SaveCopyAs TempFilePath & TempFileName & FileExtStr
Set wb2 = Workbooks.Open(TempFilePath & TempFileName & FileExtStr)

With wb2
On Error Resume Next
.SendMail "", _
"This is the Subject line"
On Error GoTo 0
.Close SaveChanges:=False
End With

'Delete the file
Kill TempFilePath & TempFileName & FileExtStr

With Application
.ScreenUpdating = True
.EnableEvents = True
End With
End Sub

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thanks