Remote login for System.IO

Hello,
Does anybody know how I would go about sending login information so I can perform some System.IO operations on a remote computer.

The error its giving me is the following..."The account used is a computer account. Use your global user account or local user account to access this server".

I don't want to go to the remote computer and set up access for the ASPNET account...I would rather just send login information.

Here is a snippet of my code....

Private Sub openWordDocument(ByVal paramFileName As String)
        Dim appWord As Word.Application
        Dim appDoc As Word.Document

        appDoc = appWord.Documents.Open(paramFileName)
        appWord.Visible = True
    End Sub
Private Sub getAndLoadFileName(ByVal paramBaseCode As String)
        Dim myDir As DirectoryInfo = New DirectoryInfo("\\DOMAIN\SHARED_FOLDER")
        Dim fileInfos() As FileInfo
        Dim intNumberOfMatchingFiles As Int32
        Dim strFileName As String

        Try
            fileInfos = myDir.GetFiles("*" & paramBaseCode & "*") <------ERROR IS HAPPENING HERE
            intNumberOfMatchingFiles = fileInfos.Length

            If intNumberOfMatchingFiles > 1 Then
                Page.RegisterStartupScript("opendoclist", "<script language='javascript'>window.open('doclist.aspx?reportid=" & paramBaseCode & "','document_list','height=200,width=400,status=no,toolbar=no,menubar=no,location=no')</script>")
            Else
                strFileName = fileInfos(0).FullName
                openWordDocument(strFileName)
            End If
        Catch ex As Exception
            Throw New Exception(ex.Message)
        End Try
    End Sub