How to Select Every Other Line in a Word Document Using VBscript

Hello Experts.
I've been trying to create a simple macro that goes through a small word document and select all text on every other line. I have hundreds of documents where I have to do this manually, and it would really help if I could get a macro to do it.
It's definitely not correct, but here's the script I have right now:

Sub HighlightAlternateLines()
  Dim par As Paragraph
  For Each par In ActiveDocument.Paragraphs
    Selection.ExtendMode = True
    Selection.Expand wdParagraph
    GoDown = Selection.MoveDown(Unit:=wdLine, Count:=2)
  Next
End Sub

Any assistance you can offer would be fabulous.

Best,
Tony