Great App....after a little bit of work. For those who are having trouble...yes the help file is wrong as the device doesn't support --J so this is how I did it.
1) Download the tar.gz or tar.bz2 file with the dictionary stuff. 2) Do the first command in the help file to make the /.stardict/dic diretory. 3) With winRar or whatever unpack it yourself and move the resulting files to the device. 4) In xterm find go to root mode, cd to the directory where the files are (probably /home/user/MyDocs/.documents/) and use the "mv" command to put them in the ~/.stardict/dic" directory. 5)viola

Edward, thanks for trying but I'm not a linux or unix user so I would need exact instructions and syntax. I'm getting errors just trying to perform the mkdir .stardict/dic command. I was able to get dictd_www.dict.org_gcide.dict.dz, dictd_www.dict.org_gcide.idx dictd_www.dict.org_gcide.ifo to the phone but I'm not even sure if these are the correct files.