Thanks Nat.
I've tried all those recommendations in the link, and none of them solve it.
Closest i can get to anything working is in Mozilla Firefox. And the screen I get on the Sky Sports website says:
"The address wasn’t understood
Firefox doesn’t know how to open this address, because one of the following protocols (skysports) isn’t associated with any program or is not allowed in this context.
You might need to install other software to open this address."
I'm at a lost end.
I find it hard to understand why Virgin and Sky don't make this easier for clients to watch on a PC.