>>>> Do what women do - stop and ask directions!
Oh no !~ this would be a last resort.
Only kidding I did this last year ( I think it was last year it might have been the year before) when my wife made me stop for directions.
I also have a Garmin Nuvi 350 and when I had the 2007 maps that came with it, it worked great north of 466 including getting around the circles. It didn't have anything south of 466. I updated it for free to the 2008 maps and it now includes south of 466 and if I can remember including Deval. I'm in NY now and have only checked a few streets South of 466 to make sure the update did include them but the area seemed well covered.
I highly recommend the Nuvi 350 > great directions, small to fit in your shirt pocket when you leave the car and easy to use. Love the Text to voice feature that the Nuvi 200s don't have. This feature not only tells you to turn right in 100 feet but to turn right in 100 feet and gives the street or highway name (not always in agreement with the sign on the turn but a feature I really like and recommend)