Mimi- were you being sarcastic? I haven't ridden in Dallas, but Tyler (just east) is hilly and "The Beast" out there is definitely steep!
That being said, I ride steep hills often (usually short but steep) and have not had a big problem dropping chains. Did it a couple times on my old Fuji, no big deal. Haven't done it yet on my Synapse, but I am sure I will one day.
It happens when the bike is in tune but it is really a big problem when your chain is old, cables stretched.
Pooks- It happens but it isn't any reason to swear off chains. Make sure the LBS provides free tune ups for a year and see if they have a basic maintenance class. Some of the shops in Houston even offer women only maintenance classes. You'll be fine. :)

