tuxfan,
Have you tried FlashFXP? Its just the one you're looking for. Its shareware though.
http://www.flashfxp.com/
FlashFXP offers the easiest and fastest way to transfer any file using FTP, providing an exceptionally stable and robust program that you can always count on to get your job done quickly and efficiently. There are many, many features available in FlashFXP. Here are just a few of them:
*
Local and Site to Site File transfers.
FlashFXP allows you to transfer files from any FTP server directly to your local hard drive, or transfer files between two ftp sites (Site-to-Site transfers), giving you total control over any situation.
* FTP Proxy, HTTP Proxy, Socks 4 & 5 support.
FlashFXP can handle thousands of connection types. If you are behind a firewall, proxy or gateway, no need to worry, as FlashFXP can be configured to support almost any network configuration.