seriously dude, you should've done your homework... 5.1 ch sound from your acer (or for that matter from most notebooks) is next to impossible... another way to get around the problem is to sync all the inputs for your speakerset & attach it to your pc.. well, it wont be dolby surround sound, but you'll get an output from every speaker, though i should warn you, it may ruin the quality of the sound if u dont do it properly... best of luck!