Welcome to the board!!.....and go kick that LBS guy in the hinney!! J/K.....my "get back into biking by commuting" bike was a Trek Navigator 200 bought just about a year ago! She was my first Trek and my first bike after a 6 yr sabbatical and I love her! I rode my first 20+ ride on her and my first 30+ ride on her. I tried more to ride by time than miles at first and then once I realized I could ride the miles I just increased by half every time I wanted more miles.
So which Navigator did you get?? also, have you had a chance to bop over to the "getting to know you" thread?? .....if not, it's in the open threads and will give you a chance to meet us and - if so inclined - tell us some more about you!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"