シンプルな VB.NET アプリケーションでうまくいくはずです。新しい Windows Froms プロジェクトを作成し、フォームをダブルクリックして、すべてをマークして貼り付けます。
Public Class Form1
'############## Settings ##############'
'Change to your URL
Dim url As String = "http://google.de"
'Change to the text the window title should have
Dim title As String = "Your Title here"
'Change to the windows size you wish to use
Dim window_size As Size = New Size(800, 600)
' ^X^, ^Y^
'########### End of Settings ##########'
Dim WithEvents WebBrowser1 As New WebBrowser
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Me.Text = title
Me.Size = window_size
Me.Controls.Add(WebBrowser1)
WebBrowser1.Dock = DockStyle.Fill
WebBrowser1.Navigate(url)
End Sub
Private Sub WebBrowser1_Navigated(sender As Object, e As WebBrowserNavigatedEventArgs) Handles WebBrowser1.Navigated
Dim elements As HtmlElementCollection
elements = WebBrowser1.Document.GetElementsByTagName("img")
For Each element As HtmlElement In elements
element.SetAttribute("border", "0")
Next
End Sub
End Class
設定を編集し、F5 を押して実行します。ほら、デスクトップ アプリケーションに WebApp が表示されるはずです。