VB Script Method to Capture Authenticated User

I have a VB.Net subroutine that I run on load to capture the user ID of the authenticated user. I use the variable, for example, to notify the user via email of the results. How would I do this in vbscript. Below is the code.

Thanks!

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        lblResults.Visible = False
        imgCheckMark.Visible = False
        imgRedX.Visible = False
        strDate = Now
        strUser = (Request.ServerVariables("AUTH_USER"))
 
        If InStr(strUser, "Domain\") Then
            strUser = Replace(strUser, "Domain\", "")
        End If
 
        If InStr(strUser, "Domain\") Then
            strUser = Replace(strUser, "Domain\", "")
        End If
        Label28.Text = strUser
    End Sub

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