Give some specifics please...
Are you using a Desktop comp or a laptop? If your computer is newer, you most likely have a "digital out connection" and the default setting for your sound card driver configuration is to ONLY enable the digital out signal... this would mean that if you plug a standard set of analog speakers into your comnputer, the sound would not come out. you would have to use a digital sound processor (aka a home theater system) with a coaxial in jack...
my guess is, you just want to use an ordinary set of (amplified) speakers with your computer, right?
well, I can't tell you exactly how you can enable the analog signal since I don't know the brand of your soundcard or the operating system you are using.
I would be glad to help if you could get me that information. feel free to email me and I will reply asap
sewellp@yahoo.com
Patrick Sewell
April 2008