Email function generating error

I'm using this, and getting a parameter missing error: (error message below)

  1    Protected Sub SendMailMessage(ByVal from As String, ByVal recipient As String, ByVal bcc As String, ByVal cc As String, ByVal subject As String, ByVal linkback As String, ByVal sendersite As String, ByVal name As String)
2            ' Instantiate a new instance of MailMessage
3            Dim mMailMessage As New MailMessage()
4            Dim msg As String = ""
5            msg += "Dear " & name & ","
6            msg += "You just received a new link request at you ...