I purchase this unit on sale locally . when I first turn it on there be some new street around my area -lrb- Lafayette , La -rrb- that be not include in the map . I try to register the 40lm on my Windows 7 64-bit pro system but it would not work . I end up update it on my company laptop with Windows xp . Registered the unit and download the current map . disconnect the unit from the laptop and plug it into the Windows 7 System and it connect no problem . be use the Windows & to update and download ever since . I love the unit . when you get to a exit it show the proper lane to be in . you can also get a list of restaurant for meal , gas station location and snack while on the road . you can download different vehicle to use as you default pointer . the x-wing fighter be my favorite . direction be precise and clear . show speed limit on major highway and interstate but not local road . it would be nice to have a larger selection of voice to play with . Cartoon voice would be even more fun . I just discover you can use you own voice or family or friend to use for the voice command . would recommend to a friend to purchase .