Private Function paco(ByVal xmlFile As String, ByVal xslFile As String) As String
        Dim archivo As String = "c:\temp.tmp"
        Dim temp As New Xml.XmlDocument
        Dim resolver As XmlUrlResolver = New XmlUrlResolver
        resolver.Credentials = System.Net.CredentialCache.DefaultCredentials
        Dim XSLT As Xsl.XslTransform = New Xsl.XslTransform
        XSLT.Load(xslFile, resolver)
        XSLT.Transform(archivo, archivo, resolver)
        Return ReadFile(archivo)
    End Function