I haven't found anywhere that's showing the games (not to say there isn't), but it is possible to watch them at home here in the UK - not sure if this is of use to you?
If you get either satellite TV or Freeview (basically digital TV), you can subscribe to a channel package from Setanta which includes NASN (www.nasn.com - North American Sports Network). NASN shows a fair number of NHL games, and at the moment it's showing the Stanley Cup finals - it shows them live first (which is the middle of the night for us), and then repeats them at a more sociable time over the couple of days. It's £9.99 a month, with a minimum 2 month subscription, and I think a one time setup charge of around £15.
Hope this helps!
H