I cant figure out how to launch an XWindows app from under an Aqua app, im not sure its evne possible. I actually use both Emacs.app and xmeacs on OSX i honestly now prefer the Aqua Emacs (I still perfer xemacs on all ny other machines...) you might try the Aqua Emacs out, its quite pretty and has some nice features. on panther I cant even do 'xemacs' from the Terminal and get it to start in Xwindows.