sound question

[James Turland]

hi;hope I'm posting this question in the right place.I would like to get
the three jacks on the back of my computer to be used for 5.1 (6)speaker
sound.At an alsa site I found some info about changing editing on my
asounrdrc file.Being a newbie to ubuntu I don't know how .I have barely
used the terminal because you ubunters have filled the synapses with
everything I have needed so far.I would like  a step by step guide to
the editing if that is what you suggest I should do.thanks to the ubuntu
comunity James