Código vb:
Ver originalPrivate Sub Command1_Click()
With WebBrowser1
.Visible = True
.Navigate "http://www.tupagina.com"
Do While .Busy = True: DoEvents: Loop
.Document.nombredelformweb.Username.Value = "tuusuario"
.Document.nombredelformweb.Passw.Value = "tupassword"
.Document.nombredelformweb.nombredelboton.Click
End With
End Sub