Well um yeah Elbasto has a good point. I'm not too familiar with the legal stuff though. For the original game you can just download a mod or something like Supermod, XL, or Wesmod. I mean they're mods closest to the original game and most people would play those eventually. They got all the textures that you need.
I have an extra copy of old MTW (still works fine) and I can give it to you for free but then again you probably don't wanna pay for the shipping.
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