VB Maros ".to" = Cell range

Hi,

Hope you can help, would like to set a macros were address ".to" is equeal to cell value

I.e.
.to = cell A1
.cc = cell A2

this it what i got so far

Sub OT()
'Working in Excel 2000-2013
'Mail a copy of the ActiveWorkbook with another file name
'For Tips see: http://www.rondebruin.nl/win/winmail/Outlook/tips.htm
Dim wb1 As Workbook
Dim TempFilePath As String
Dim TempFileName As String
Dim FileExtStr As String
Dim OutApp As Object
Dim OutMail As Object

With Application
.ScreenUpdating = False
.EnableEvents = False
End With

Set wb1 = ActiveWorkbook

'Make a copy of the file/Open it/Mail it/Delete it
'If you want to change the file name then change only TempFileName
TempFilePath = Environ$("temp") & "\"
TempFileName = ActiveSheet.Range("D6").Value & "-" & ActiveSheet.Range("E6").Value & " " & wb1.Name & " " & Format(Now, "dd-mmm-yy h-mm-ss")
FileExtStr = "." & LCase(Right(wb1.Name, Len(wb1.Name) - InStrRev(wb1.Name, ".", , 1)))

wb1.SaveCopyAs TempFilePath & TempFileName & FileExtStr

Set OutApp = CreateObject("Outlook.Application")
Set OutMail = OutApp.CreateItem(0)

On Error Resume Next
With OutMail
.to = ""
.cc = ""
.bcc = ""
.Subject = "Overtime Request Form"
.Body = ""
.Attachments.Add TempFilePath & TempFileName & FileExtStr
'You can add other files also like this
'.Attachments.Add ("C:\test.txt")
.Send 'or use .Display
End With
On Error GoTo 0

'Delete the file
Kill TempFilePath & TempFileName & FileExtStr

Set OutMail = Nothing
Set OutApp = Nothing

With Application
.ScreenUpdating = True
.EnableEvents = True
End With


Hope this makes sense

Many thanks,