Hello, I can connect to a PC and other Macs by going to my finder and clicking on a device that appears in the shared part on the left hand side. I click connect as, and type in their username and password, and I can connect just fine. But if the person is using windows and doesn't use a password, I can't connect. I type in their username and leave the password field blank, and it won't connect. What am I doing wrong, or what can I do to connect? Thank you very much.