Main computer sharing printers/folders on the network runs Windows 7 Home/Premium 64-bit. Password protected sharing is turned off but machine keeps asking for username and password authentication. One computer on the network (running Windows XP Pro) is able to access shared files but all other computers are asked for a password. Problems began when we unhooked the router and hub and moved computers around but everything is hooked up correctly - the Internet and the network work. Only problems have been with WINS - not all computers seem to be able to see each other on the Workgroup anymore. Have tried connecting to different ports but authentication on main computer continues to be an issue.