Thanks! For an intelligent person, I feel bad knowing so little about our computer. I tell DH, if anything ever happens to him, I'll be in serious computer trouble. (Actually my dd, 13, knows more about it than I do.) I did OK ordering the vouchers over the phone, and don't need any more, so I'm not worrying about firewalls for now, but it's good to know.
I may end up staying a member of hotwire at least for a little while, as I ordered a bunch of gift cards too. How long does it take to get the credits back for the purchases?