DriveHQ FileManager automatically uses your Internet Explorer's proxy settings. However, if your proxy server requires logon, it may not work. In this case, please use 3rd party FTP client software. For more info, please visit:
http://www.drivehq.com/ftp/
Click on FAQ and Expand All. 3rd party FTP client software is available on the software tab. You can also use Windows Explorer, entering the address:
ftp://USERNAME:PASSWORD@ftp.drivehq.com