Thanks a million for all the helpful advice !! -- I will post here as soon as I try the jumpstarting. So at least this may help someone else down the road.
It wasn't colder than usual -- I live in California... which means one season all year long pretty much.
Do you really think I'll have to get a new battery, or do you think that if I jump this one, it might last...? Also what should I expect cost wise for replacing the battery?