It didn't take me long to seek out this group. My S.I.L. has a Garmin in his truck and it impressed me. He gets lost a lot so I thought I'd one up him so I got the TomTom. Must've been a fire sale on the 510's... Now I find out my home address isn't in the system. House numbers changed about 4-5 years ago. I'll learn my way around this gadget eventually with the expert help of you all.