Well, as much fun as some warm company might be...
...depending upon what's wrong, I think Moderator might want to hang onto his $ until he knows what's wrong with the furnace and how much this is going to set him back financially.
As long as it doesn't get to be -10 or colder in your place and all of your water supply lines are indoors, you'll be fine until you can get someone in to look at it. If there's a real risk of that, you might want to look at getting some heater tape from a hardware store (even Wal-Mart should carry that). I would think you can get someone in before it comes to that, though. It certainly won't come to that in 5 or 6 hours if your insulation is worth anything. It will take at least an hour to completely re-warm the place after the furnace gets running again, however.
As for keeping YOU warm, you might want to run out to Wal-Mart ASAP and get yourself and electric blanket or throw so you won't freeze half to death overnight!
I know about surviving in -20 or below weather with a broken furnace (or when the pilot light just plain got blown out by a foul wind down the chimney, which was more frequently the case) and three small children in a mobile home—I've been there a few times. And considering that the youngest is 18 as of today and the older two have babies of their own now, obviously we survived those bad old days and nights pretty good.
One thing that helped us back then was having a heated queen-size water bed. As soon as I realized that the temperature in my room had gone down substantially, I'd jump out of bed, check the thermostat to see that I wasn't imagining things, wake up and gather the girls and pile them into my bed with me, call SaskEnergy and wait with the girls until the service technician came, usually to re-light the pilot. Then I'd keep the girls with me until the whole place warmed up again.
If you have an alternate source of heat on your bed, you're that much further ahead of the game. So get yourself an electric blanket—they're indispensible for times like this!