RJ- If you are using any kind of modern computer, I think Flash is probably already in there. It's a browser plug-in that allows viewing video on web pages. You don't generally have to search around and download it yourself, it kind of loads itself when needed. I would guess that you could probably sign up for the IPT live matches and everything would work OK without you having to go to any special trouble.
P.S. -- If you can watch videos on YouTube, then you should have no trouble with the IPT videos.
Jeannie