"Port Device not working"

in my code for telephone dialer, when the form loads

visual basic code:


Private Sub Form_Load()
MSComm1.CommPort = 3
MSComm1.Settings = "9600,N,8,1"
MSComm1.PortOpen = True
End Sub


gives an error


Code:


Run time error '8012':

"The device is not open"

please help

Regards
Mohit

Keeping it basic>
Be sure you actually do have a com 3 on your computer and second that it isn't in use by something else.

ya, i do have a com 3 on my comp and i have compiled the code before,but after making few changes in the interface,its not working now