That depends upon whether you mean the Pefs file or the Prefs window/control panel. The prefs file can be found in the prefs folder labelled .limewire (u might be able to search for it.) You haven't told anybody what comoputer you're using (it makes a big diff!) For window go to lw menu Tools-Options: & here are all your potential preference settings. For Mac OSX it's lw menu Limewire-Prefs. Did you read all the sticky's at the top of the section list of threads? Your answer could be in there! Also try other sections.