Uhhh...You don't need FTP client software to flash an image. I replied to your post regarding how to flash an image to your type of box. Anyway, if you just want to test the connection to your box, you can ping it, telnet to it or FTP to it without client software. Just stick in ftp://'ipaddress' into any address bar.
read it. that for updating the satellites.xml file. necessary really to find all the transponders. but dont get ahead of yourself. flash an image first. get your box all setup. before you do a scan, find yourself an up to date satellite.xml file for your satellites, ftp it, scan away, and use dreambox edit to save your settings so you never had to do it all again. anyway, first things first, flash away, get that right, and come back if you have any more questions.
This will do you for hotbird. FTP it to /etc/tuxbox then do your transponder scans. Make sure when you have all channels, use dreambox edit to save your channel list. you can then use to resotre quickly your favourites and stuff (it is also very good for making favourite lists).