Scot,
Please read the 3 pages of your original post from yesterday. Excellent information and advice was given in those posts.

In short, the tech performing your daughters ultrasound is not qualified to make any type of diagnosis. The only reliable testing for Downs is an amniocentesis or chorionic villi sampling. The ultrasound needs to be reviewed for certain characteristics by a perinatologist, and then, they would likely suggest an amnio.