Thanks for all the kind words of encouragement about our icky Hard Drive situation. Luckily Jenn and her boyfriend came to the rescue and in a big way!
Not only was Todd able to retrieve files from the dead computer, Jenn lent us an external hard drive AND a laptop until we can buy a new one! Luckily Jenn is a geek (in a good way) and understands that we just don't want to jump in and buy a computer before Monday, which is when Fi leaves the country for 2 weeks.
So I haven't looked at our retrieved files yet (I was a little geeked out by the time we got home last night) but fingers crossed that the guest list isn't corrupted! Thanks Jenn & Todd!