I buy this gp receiver `` fly blind '' - I have little time and no experience . so I buy it through Amazon -lrb- from a Camera outfit in NYC -rrb- , and it arrive really quickly . I do not really know how it would work with my netbook computer and the gp software that I have . it take I a few minute to figure out how to set it up the first time , and then set up the com port -lrb- the default port be not the right one -rrb- , but it be not too hard . then I let it look for satelite - which take over 15 minute . but when I fire up the gp software , it work the first time , and I have no issue with it whatsoever . I do not know if it drain the battery or not ... one time it seem to , and the next it do not . I have only use it a few time , but I be quite satisfied with it .