I have an iMac running Lion and 2 Windows 7 Notebooks on the same network. Both Windows 7 machines can see and connect to the iMac, while the iMac displays both of the Windows machines in Finder, I can connect to one of them and the icon mounts as it is supposed to. Now the other one says connection failed and when I click on "connect as" it display my user name but will not accept my password. I can't remember how I got the one to connect. Can anyone help?