Private Sub Worksheet_Change(ByVal Target As Range)
Const WS_RANGE As String = "H1:H10" '<== change to suit

On Error GoTo ws_exit
Application.EnableEvents = False

If Not Intersect(Target, Me.Range(WS_RANGE)) Is Nothing Then
With Target
Select Case .Value
Case "MD": .Value = "McDonald, Unit 5"
Case "PE": .Value "Peters, Brick Lane"
'etc
End Select
End With
End If

ws_exit:
Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click on the sheet tab, select
'the View Code option from the menu, and paste the code in.


--
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

"Danno 24/7" wrote in message
...
Hi

I need to be able to enter a text abbreviation to represent a client
address
in a cell for it to return the full address in the same cell

ie

If I type MD in cell A1 it will return MacDonalds, Unit 5............etc
in
the same cell

I have a database sheet which is referenced for the full address and use
the
IF formula to locate the correct address from the abbreviated text.