The Garmin nuvi 750 GPS unit is reasonably priced with high-end features.  It requires an initial download of updated maps before using.  This took about three hours on a DSL connection so I did it overnight when I wasn't using the computer for anything else.  The unit worked perfectly from the start.  The operating manual is a bit light on details but much can be learned by going on-line to the Garmin website and browsing.  For example it took several trial and error attempts before determining how to insert a space between letters or words.  It may be because I am not familiar with the...