Re: doing something wrong or just not possible
I know this isn't the point, but you could just connect the external drive to the netbook, then copy them over then use them on the HP.
Aside from that you should be able to share files fine. One thing i did notice in networking is that both computers need passwords, not really sure why or if i was just unlucky.
So make sure that the windows 7 computer turn on network discovery is on as well as file sharing.