I know it isn't a direct answer to what you are asking for, but in general I think that modal interfaces should be used very sparingly, if at all. In most cases

I know it isn't a direct answer to what you are asking for, but in general I think that modal interfaces should be used very sparingly, if at all. In most cases, you can construct the interface in a non-modal way, and you end up with a better user experience. It's not always easy, but I think it's usually the better solution.