Hi backatya07, and welcome to the forums. No, to the best of my knowledge there are no PC GPS navigation software programs that are sold on media other than CD or DVD. That, however, should not prevent anyone from installing any program on a new laptop w/no DVD drive. You could connect via network to another computer that does have a DVD drive. Or you could use an external DVD drive.
There are several people here at the forum who also have Acer Aspire One, and they may tell you how they did it.
Also, you may scroll down closer to the bottom of this page, to see links to 5 similar threads. They are all about Acer Aspire One.