Thanks for filling in the gaps, JohnnyB. It certainly answered some questions I had, and pretty much confirmed what I suspected this show was going to become: a new-millenium retelling of "V", that '80s sci-fi miniseries that NBC ran where alien vistors come to Earth and start their conquest of the human race.
The real kick-in-the-teeth will be if the aliens are killed by a common Earth virus ala "War of The Worlds" and "V".
I guess its a good thing I didn't pay good money to see it in the theatre.