How to hide the DOS window?

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.NET

I am relativly new to vb.net ..... heck I'm new to
VB in any version. So I
apologize if this is overly dumb.
I am trying to start and stop a particular file
using the process.start()
and process.kill().
These are working but the DOS window is always
appearing.
What am I missing to hide the DOS window?
I have tried .hidden, .minimized, removed the
window style completeley. I
haven't found a way to hide the DOS window.
Any help is appreciated.

Dim mProcess As Process 'form level
Private Sub Form1_Load(ByVal sender As Object,
    ByVal e As System.EventArgs)
    Handles MyBase.Load
    mProcess = New Process
    With mProcess.StartInfo
        ..FileName = "repstore.exe"
        ..Arguments = "3104"
        ..UseShellExecute = False
        ..WindowStyle = ProcessWindowStyle.Hidden
        ..RedirectStandardOutput = True
        ..RedirectStandardInput = True
        End With
    End Sub
Private Sub btnStart_Click(ByVal sender As
    System.Object, ByVal e As
    System.EventArgs) Handles btnStart.Click
    mProcess.Start()
    End Sub
Private Sub btnStop_Click(ByVal sender As
    Object, ByVal e As
    System.EventArgs) Handles btnStop.Click
    mProcess.Kill()
    End Sub

I am relativly new to vb.net ..... heck I'm new to
VB in any version. So I
apologize if this is overly dumb.
I am trying to start and stop a particular file
using the process.start()
and process.kill().
These are working but the DOS window is always
appearing.
What am I missing to hide the DOS window?
I have tried .hidden, .minimized, removed the
window style completeley. I
haven't found a way to hide the DOS window.
Any help is appreciated.

Dim mProcess As Process 'form level
Private Sub Form1_Load(ByVal sender As Object,
    ByVal e As System.EventArgs)
    Handles MyBase.Load
    mProcess = New Process
    With mProcess.StartInfo
        ..FileName = "repstore.exe"
        ..Arguments = "3104"
        ..UseShellExecute = False
        ..WindowStyle = ProcessWindowStyle.Hidden
        ..RedirectStandardOutput = True
        ..RedirectStandardInput = True
        End With
End Sub
Private Sub btnStart_Click(ByVal sender As
    System.Object, ByVal e As
    System.EventArgs) Handles btnStart.Click
    mProcess.Start()
End Sub
Private Sub btnStop_Click(ByVal sender As
Object, ByVal e As
    System.EventArgs) Handles btnStop.Click
    mProcess.Kill()
End Sub

[edit]Code block added - OriginalGriff[/edit]