Open a Terminal (Applications -> Accessories -> Terminal), or press Alt-F2 to bring up the Run Application dialog. To put window buttons on the left-hand side, OSX-style, on a single line type: gconftool-2 –set /apps/metacity/general/button_layout –type string close,maximize,minimize:menu For the right-hand side, Windows-style (& earlier Ubuntu releases): gconftool-2 –set /apps/metacity/general/button_layout –type string menu:minimize,maximize,close Easy ! [...]