Ok, SC2 multiplayer on battle.net at Blitzone DJ works. A little iffy getting the auto-login tool of theirs to work, but when it works, it works. When it doesnt, restart the PC, delete the SC2 folder in "My Documents" and try again.

Tested it yesterday night and it was more like Stare-Craft for the people who were waiting for their PCs (Sat.night CC Full House) and kept getting asked mid game, if I was playing SC2 ...

As for single player, took me more than an hour to figure out how to move my save games over, since the auto-login tool randomly chooses a "free" account to login with. Thats another can of worms for another post ...