Dailing with modem

I am creating a program that needes to dail with the modem. I want to use ms comm but im not sure how it works exactly. Can anyone give me a idea on how to do this?
Thanks

------------------

Const Internet_Autodial_Force_Unattended As Long = 2

Public Declare Function InternetAutodial Lib "wininet.dll" (ByVal dwFlags As Long, ByVal dwReserved As Long) As Long
Public Declare Function InternetAutodialHangup Lib "wininet.dll" (ByVal dwReserved As Long) As Long

Dim lResult As Long
lResult = InternetAutodial(Internet_Autodial_Force_Unattended, 0&)