How to watch live MMA for free on your computer:
Download TVU Player (link is below). It's 100% free and doesn't come with any virus' or any crap like that.......Open it up and go to the channel called 'MMA TV' (it's early on in the 6'000s somewhere), a preview for the event will be shown if it's a UFC event, I don't know if they have previews for other organisations, once the main card starts you'll be able to watch the whole event just as it would be shown on tv.
Hope that makes sense. Download It Here
Cage Rage 28 starts at 9.00pm UK time, 4.00pm East Coast US Time.