Did they have a lingerie catalog??
I would have sworn that this was the show I was thinking of, but from reading the synopsis and reviews, it doesn't sound like it.
I was looking for a show where the married couple moved out west to a ranch, and ran a mail-order Lingerie Catalog (the show was a family show, so nothing racy.)
There was a ~12-year-old boy, and an older girl, I think.
I *THOUGHT* it starred John Ritter, but if it wasn't Hearts Afire, then I don't think it could have been him.