One way

'-----------------------------------------------------------------
Private Sub Worksheet_Change(ByVal Target As Range)
'-----------------------------------------------------------------
Const WS_RANGE As String = "A1"

On Error GoTo ws_exit:
Application.EnableEvents = False
If Not Intersect(Target, Me.Range(WS_RANGE)) Is Nothing Then
With Target
Me.Unprotect
.Offset(1, 1).Locked = .Value = "Yes"
Me.Protect
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 Phillips

(remove nothere from email address if mailing direct)

"PH NEWS" wrote in message
...
Hi,

Is there a way to lock a cell depending on the entry on another?

e.g, If A1="yes" then B2 would become locked and the user would not be
able
you make an entry.

Thanks

SPL