The Windows 7 'View Available Networks' pop-up shows three dial-up networks that I'd never connect to directly:

They're from my 3G dongle, the built-in bluetooth modem connection and a VPN program respectively, and they all have separate UIs to initiate the connections. So they're just taking up space here at the top of a dialog you can't resize. Can I hide them from this dialog?
Thanks. I've seen this answer but that's only for wi-fi networks, and I can't find anything equivalent in the network and sharing center, view network connections or the rest of the control panel.