A small Harbor Freight greenhouse for $300 with a $10 heater should keep them alive. Keep the temp around 60F.

I have done it, but they don't taste as good the second year. This year, however, I have growing one tomato I grew from a clipping I took last November, and it is growing just fine. But the ones that stay in the ground just aren't the same, must be the roots or something.
As for your peppers, I have only successfully overwintered ONE variety of pepper, and the other kinds just don't make it and/or don't like being moved into pots. The successful one though, a Marchand, is now 6 (yes six!) years old, but it's a little sad and I think this is the last year. But we'll see! If it gets frosty, I make sure I put sheets over it with Christmas lights to keep it from freezing.

Carla in Sac

There is a thread somewhere on Gardenweb from last December that shows my tomato plants dressed up with outdoor Christmas lights. They survived the winter. (And they looked rather Christmasy). I also put out a lot of two-liter pepsi bottles filled with water to try to keep them warm. My old, old, mama that grew up on a farm says that in her day, (she lived in Arkansas) they used to cover the plants with newspapers overnight when there was a frost coming, but here in southern California, I never had to resort to that. The temperature, here, last winter, did reach frost levels a couple of times, but it didn't do damage, perhaps because of my counter-measures, or more likely, I think, because the plants were so close to the foundation and walls of my house, which must store some of their own residual heat.

thanks guys! hey carla, my plants are all in pots already, would a greenhouse be easy to construct let alone logical for sacramento winter?