Try something like this:

.Attachments.Add ( "C:\TempReports\ReportExport.pdf")

>Hi.. Wesley .. I Interested .. but how to attach the file? ..
>I met error message: "Could not complete the operation, one or more parameters value are invalid" Error code: -2147024809 (80070057) .. I used below code:
>
>Private Sub MsOutlook(tto As String, tSubject As String, tAttach As String, tBody As String)
>Dim oItem As Outlook.MailItem
>Dim oOutlook As Outlook.Application
>Set oOutlook = New Outlook.Application
>'Set oitems = objInbox.Items
>Set oItem = oOutlook.CreateItem(olMailItem)
>
>With oItem
> .To = tto
> .Body = tBody
> .Attachments = tAttach
> .Subject = tSubject
> .Send
>End With
>End Sub
>
>am I missing something?