Você pode criar ou traduzir/modificar os menus no Fluxbox editando o arquivo menu dentro da pasta .fluxbox.
$ mousepad menu
Uma boa olhada nesse arquivo é suficiente para entender como ele funciona.
Basicamente é assim:
[begin] (título)
[separator]
[submenu] (nome do submenu)
[exec] (Aplicativo) {comando}
[end]
[end]
Tem dois [end], pois um é o end que fecha o [begin] e outro fecha o [submenu].
Se for editar, é extremamente recomendado, antes de tudo, fazer um backup do arquivo para poder restaurá-lo caso algo saia errado.
Para fazer um backup use o comando:
$ cp menu menubackup
Uma cópia do arquivo menu será criada com o nome menubackup.
Abaixo um exemplo de menu que pode ser útil para você configurar o seu:
[begin] (Zenwalk)
[separator]
[exec] (Executar...) {fbrun}
[workspaces] (Área de trabalho)
[separator]
[exec] (Terminal) {Terminal}
[exec] (Thunar) {thunar}
[exec] (Firefox) {firefox}
[submenu] (Acessórios)
[exec] (Character Map) {gucharmap}
[exec] (Galculator) {galculator}
[exec] (Mousepad) {mousepad}
[exec] (Thunar File Manager) {thunar}
[exec] (Xarchiver) {xarchiver}
[exec] (Xpad) {xpad}
[end]
[submenu] (Desenvolvimento)
[exec] (Bluefish Editor) {bluefish}
[exec] (Geany) {geany}
[exec] (Hex Editor) {ghex2}
[end]
#[submenu] (Jogos)
# [exec] (AssaultCube) {assaultcube -t}
# [exec] (FakeNES) {fakenes}
#[end]
[submenu] (Gráficos)
[exec] (Dia Diagram Editor) {dia}
[exec] (Evince) {evince}
# [exec] (FontForge) {fontforge}
[exec] (GQview) {gqview}
# [exec] (Inkscape SVG Vector Illustrator) {inkscape}
# [exec] (QCad) {qcad}
[exec] (The GIMP) {gimp}
[end]
[submenu] (Multimídia)
# [exec] (Alsaplayer) {alsaplayer}
[exec] (Audacious) {audacious}
[exec] (G-Mplayer) {gmplayer}
[exec] (GnomeBaker) {gnomebaker}
[exec] (Grip) {grip}
[exec] (Mplayer) {mplayer}
[exec] (Streamtuner) {streamtuner}
# [exec] (VLC) {vlc}
# [exec] (x264 Encoder) {x264_gtk_encode}
[end]
[submenu] (Rede)
# [exec] (aLinkCreator) {alc}
# [exec] (Amule) {amule}
# [exec] (Claws Mail) {claws-mail}
[exec] (Firefox) {firefox}
[exec] (FuseSmbTool) {fusesmbtool}
[exec] (gFTP) {gftp}
[exec] (irssi) {irssi}
[exec] (NmapFE) {nmapfe}
[exec] (Pidgin Internet Messenger) {pidgin}
[exec] (Thunderbird) {thunderbird}
[exec] (Transmission) {transmission-gtk}
[exec] (Urlgfe) {urlgfe}
[exec] (Wifi-radar) {gksu wifi-radar}
# [exec] (Wireshark) {wireshark}
# [exec] (WxCas) {wxcas}
[exec] (Xchat) {xchat}
[end]
[submenu] (Escritório)
[exec] (Abiword) {abiword}
[exec] (Calendar) {orage}
[exec] (Gnumeric Spreadsheet) {gnumeric}
[exec] (Xsane) {xsane}
[end]
[submenu] (Configurações)
# [exec] (Fluxbox Panel Manager) {fbpanel --configure}
[config] (Configure Fluxbox)
[submenu] (Fluxbox Styles)
[stylesdir] (/usr/share/fluxbox/styles)
[end]
[subemenu] (Estilos do usuário)
[stylesdir] (~/.fluxbox/styles)
[end]
[submenu] (Sistema)
[exec] (Bulk Rename) {/usr/libexec/ThunarBulkRename}
[exec] (Cups Printing Manager) {firefox http://localhost:631/}
# [exec] (GParted) {gksu gparted}
[exec] (Hibernate) {gksu /usr/sbin/hibernate}
[exec] (htop) {Terminal -e htop}
[exec] (Login Screen Setup) {gksu gdmsetup}
[exec] (NDIS Wireless Drivers) {gksu ndisgtk}
[exec] (Netpkg) {gksu xnetpkg}
# [exec] (Qemu Launcher) {qemu-launcher}
[exec] (Root Terminal) {gksu Terminal}
[exec] (Standby) {gksu /usr/sbin/standby}
# [exec] (Wine Configurator) {winecfg}
[exec] (Zenpanel) {gksu zenpanel}
[exec] (Zenwalk Manual) {firefox /usr/share/zenmanual/index.html}
[end]
[separator]
[submenu] (Sair)
[restart] (Reiniciar o Fluxbox)
[separator]
[exit] (Sair)
[end]