The smbclient program can be used to access Windows file shares from Athena. This program provides an ftp-like interface to access Windows servers.
To list the shares on a host, use the "-L" option to smbclient:
To connect, specify a hostname and a share name:
Note: You cannot easily use the smbclient program to connect to your WIN.MIT.EDU DFS home directory (your "H:" drive on WinAthena machines). To do that, please see How can I access my WIN.MIT.EDU (WinAthena) home directory from Linux?.