Create New File in share using alternate user credentials

I am writing an applicaion which will create a text file in a networked share which the currently logged in user may not have proper permissions.  I've written a console app to model the process.
My thought was to first programmatically open the share using the alternate credentials and then create the file.  
Using the model code below, I receive an "The parameter is incorrect" error at p.start()
Research indicates that I may be stuck without shelling out to a "Net Use" statement.  Reasons:
1.  Specifying User requires: UseShellExecute = False
2. UseShellExecute = False requires:  an EXE file be defined as the FileName

The share does exist and the code works if I don't specify the domain, user and password parameters but....

I would prefer to think that there's another way which I'm missing.   Any thoughts?

Thank you.

The model code reads:
        ' Define Path and name for Text File
        Dim TextFilePath As String = "\\ServerName\ShareName"
        Dim TextFileName As String = "LogFile.Txt"

        ' Define Password SecureString
        Dim s As String = "PaSsWoRd"
        Dim ss As New System.Security.SecureString
        Dim c As Char() = s.ToCharArray
        For i As Integer = 0 To s.Length - 1
            ss.AppendChar(c(i))
        Next

        ' Attempt to Open Path (Network share) using alternate credentials
        Dim p As Process = New Process
        With p.StartInfo
            .Domain = "DomainName"
            .UserName = "UserName"
            .Password = ss
            .FileName = TextFilePath
            .UseShellExecute = False
        End With
       
        Try
            p.Start()
            Console.WriteLine("Path is OK")
            ' Path is open. Now Create and Write to File.
            Try
                Dim oWrite As System.IO.StreamWriter
                oWrite = IO.File.CreateText(TextFilePath & "\" & TextFileName)
                Console.WriteLine("Can open File")
                Try
                    oWrite.WriteLine("Success")
                    oWrite.Flush()
                    oWrite.Close()
                    oWrite.Dispose()
                    Console.WriteLine("Can write to File")
                Catch ex As Exception
                    ' Unable to Write to File
                    Console.WriteLine(ex.Message)
                End Try
            Catch ex As Exception
                ' Unable to Create File
                Console.WriteLine(ex.Message)
            End Try
        Catch ex As Exception
            ' Unable to Open Share
            Console.WriteLine(ex.Message)
        End Try