right click sheet tab>view code>copy/paste this
Private Sub Worksheet_BeforeDoubleClick(ByVal Target As Range, Cancel As
Boolean)
'Sub CellToDialer() 'John Walkenbach
' Transfers active cell contents to Dialer
' And then dials the phone
' Get the phone number
CellContents = ActiveCell.Value
If CellContents = "" Then
MsgBox "Select a cell that contains a phone number."
Exit Sub
End If
' Activate (or start) Dialer
Appname = "Dialer"
AppFile = "Dialer.exe"
On Error Resume Next
AppActivate (Appname)
If Err <> 0 Then
Err = 0
TaskID = Shell(AppFile, 1)
If Err <> 0 Then MsgBox "Can't start " & AppFile
End If
' Transfer cell contents to Dialer
Application.SendKeys "%n" & CellContents, True
' Click Dial button
Application.SendKeys "%d"
' Application.SendKeys "{TAB}~", True
End Sub