John, here is some code by John Walkenbach that will do it

Sub CellToDialer()
'By 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", True

End Sub

--
Paul B
Always backup your data before trying something new
Please post any response to the newsgroups so others can benefit from it
Feedback on answers is always appreciated!
Using Excel 2002 & 2003

"johnfarrow" wrote in message
...
is there a way to dial telephone numbers from excel?