Just saw on the TV schedule what looks to be a full length replay of Westminster 2012 comes on CNBC tonight at 7:00 p.m. - 1:00 a.m. CST.
Then, Opening Night of Westminster 2013 comes on CNBC Monday night, February 11, 2013, at 7:00 p.m. - 10:00 p.m. CST, with an apparent replay of it on CNBC immediately following from 10:00 p.m. - 1:00 a.m. CST.
Next, looks like a replay of Opening Night of Westminster 2013 comes on USA Network Tuesday morning, February 12, 2013, at 7:00 a.m. - 10:00 a.m. CST.
Finally, Closing Night of Westminster 2013 comes on USA Network Tuesday night, February 12, 2013, at 7:00 p.m. - 10:00 p.m. CST
with a replay of it on USA Network Wednesday morning, February 13, 2013, at 7:00 a.m. - 10 a.m. CST.
I believe they have streaming video on their website and USA might also on their website but don't know if it is live:
2013 Dog Show - News, Events, Finalists, Dog Breeds & Awards - WestminsterKennelClub.org Westminster Kennel Club Dog Show, International TV Show, and WKC Schedules - USA Network - USA Network
That's all I could find and if I got anything wrong, somebody please make corrections. Can't wait!!!
