My guess is that you're not going to be able to get it to work.
Things like Sky Go, TWC's web app, and Netflix only work with the official Silverlight plug-in, unfortunately. This is a minor source of frustration for me since I'd like to to be able use my upstairs Linux HTPC for everything I can do downstairs with the cable box and PS3. Alas, not quite. C'est la vie.
All that said, I would be very interested to hear of any solutions to this problem.
Atleast it's not flash though lol . Hopefully there'll be a solution.
Yeah, but if it was Flash, it would work! Maybe not terribly well, but it would work.
Oh, the irony.