Crittergarden, I tried over-wintering rosemary unsuccessfully for quite a few years -- until the last couple, when I discovered they do much better in a cool to chilly room, with as much sunlight as possible; mine go into our workshop area, which stays around 50-55 degrees all winter, and sit in a south facing window. They don't grow much at all, and I water very sparingly. I have a couple of scented geraniums that I keep the same way.
Which reminds me -- I'd better get mine brought into the house too!