I have a laptop and desktop running Windows 7. I'm on a college campus, and I just want to have my two computers connected through a homegroup or something functionally equivalent. However, someone else in my dormitory's wireless network has set up a homegroup already. I have no interest in joining his; I'd like to make my own for just my two computers. I can't see any way to make another one, however. Even better, if there were a way to make this connection persist across different networks, so I could always access files between the two, that'd be awesome. Any thoughts?