how do i Interface arduino and visual basic 2010 (serial communication)

Projects Interfacing w/ Software on the Computer
2

you don't have to search all the internet, just look in these forums, everything is here. i might make a youtube video tutorial on how to set it up, good idea.

here's a way to receive data, it's an event that gets called when data arrives at the com port:

Sub EventHandler(sender As Object, e As System.IO.Ports.SerialDataReceivedEventArgs) Handles Arduino.DataReceived

        Dim datareceived As Boolean = False
        Dim recStr as String = ""

        While Not datareceived

            Dim recVal As Integer
            recVal = Arduino.ReadByte()
            If recVal = 10 Or recVal = 13 Then
                datareceived = True
            Else
                recStr = recStr + Chr(recVal)
            End If

        End While

    End Sub

at the end, recStr contains the string sent by Serial.println(), it MUST be println() and not print(), otherwise the receiving will get caught in endlessly receiving (untill you send ascii 10 or 13 (NL and CR))