Go to Netload and make sure you are logged in to Netload. On the start page, choose under Upload the following: "Upload file(s) remotely" and enter the link to the remote file with the login information for the other host. If your file's link is "http://host.com/file/xyz.htm," your user name at host.com is "Joe," and your password is "123456," enter the link in the following format: http://Joe:1123456@host.com/file/xyz.htm
If your user name has an @-symbol, replace it with %40.