Hi, By specifying speakup.synth=dtlk at Debian Squeeze installation line I got my system talking via my external DoubleTalk synthesizer at the first run after the installation process. I tried to do the same on my friend's system who is using Apollo synthesizer by putting speakup.synth=Apollo at the installation line but with no luck this time. This is probably very trivial question for all of you gurus out there but perhaps someone would give me some suggestion how I can fix this and make speakup talking via Apollo synth, please. Thanks a lot. Pawel.