"Computer Lady" will get you in the area but falls a little short for the exact destination.  When going to my sister's house it told me to take a right after I passed the street.  It also told me my destination was on the left when I was pulling into the driveway on the right.  However, in her defense, she has gotten us around unfamiliar areas with few problems and recalculated routes with minimal effort.  All in all worth the investment.