Matt is correct about rooting and the possible consequences. But what kind of netbook has no markings? Could you look through the settings and see if there is any more information. It might be in the "About" section.
Also check underneath the netbook and see if there are any serial numbers etc., just curious.
I am well aware of the possible consequences, but as I attempted to demonstrate, there is no OTA update in my future AFAIK. According to the about section, the brand is 'Generic.' It was bought from heartlandamerica.com (I'm not sure if the product is still up) and again I found no manufacturer. The manual also has no copyright or other identifying marks.