A Swindon fan has put highlights of both legs online. I don't know if that's any help. It's on a Swindon Town video site along with highlights of the Coco-Cola Cup clashes of the 1990s.
That's the one. I seem to remember someone on here (back then) offering copies of the full Sky coverage. As well as it being a memorable game, I was on TV after the shootout but have never seen the coverage - and for some reason it popped into my head last night about the DVDs...