You can also watch the watch the live broadcast:
http://www.ustream.tv/channel/NURC
from the control room which will be showing the MC presentation (Don Knignt of FIRST fame), poolside commentary and various views underwater and the video from each ROV.
Watch for Mark Leon (you know, the NASA FIRST announcer with the blue hair) who will be interacting with he teams.
Tonight starts at 7 PM (MST, PST 10 PM EDT) until ??? (maybe 8 hours of broadcast)
official website:
www.h2orobots.org