That's fairly simple using a rule to identify the incoming message and a script to create the forwarded mail e.g.
Code:
Option Explicit
Sub MyFwd(olItem As MailItem)
Dim olFWD As MailItem
Dim olInsp As Outlook.Inspector
Dim wdDoc As Object
Dim oRng As Object
Set olFWD = olItem.Forward
With olFWD
.Display
.Subject = "The new subject"
.To = "someone@somewhere.com"
Set olInsp = .GetInspector
Set wdDoc = olInsp.WordEditor
Set oRng = wdDoc.Range(0, 0)
oRng.Text = "Please see the correspondence below."
.Send
End With
olItem.UnRead = False
lbl_Exit:
Set olFWD = Nothing
Set olInsp = Nothing
Set wdDoc = Nothing
Set oRng = Nothing
Exit Sub
End Sub