My friend has a desktop PC with a USB attached hard drive he wants to share on the network. I suggested plugging into Airport Extreme, but he wants fast speeds when he uses it on his PC. I have followed instructions on the Microsoft website, but they fail to work. I right-clicked on the hard drive and selected sharing, put in a shared name. Set up his computer for sharing to the extent of my knowledge. I ran Parallels on my Mac so I could follow the Microsoft instructions for connecting to his shared folder. Map network drive, then typed in his LAN IP, then his shared name. Clicked finish, and when I come to open it on it says access denied. I tried the other way and map network drive, then clicked browse --> entire network --> Microsoft Networks. I found 'Workgroup' which is the network name of his PC. Then it fails to do anything. What am I doing wrong?