If I'm not mistaken, I don't think fluxbox has icons (but I've never used it, I've only never seen icons on anyone's screen that does use it). Perhaps you can create a key binding for it? Or edit your menu so that it's immediately available? Not that it helps, but in KDE I've been using a program called kuake that works like the Quake3 terminal - I even bound it to the ~ key so that when I want the terminal I just press ~ and then it pops down from the top of the screen
