I don't know which port in the back of the Pavilion to connect the black wire from the speakers (that connect to the right speaker with red and white ends). Any ideas? They are labeled as side, rear...
To get "surround" sound, when you face the computer, you will have:
* 2 front speakers, one immediately on each side of the computer
* 2 side speakers, one on each side of your head
* 2 rear speakers, one behind each side of your head
Thus, when the sound is of a jet-plane coming towards your face,
you'll first hear the sound in the front speakers,
then in the side speakers,
and finally in the rear speakers,
to produce a sound-effect of the jet passing over your head, and going "behind" you.
Usually, for "front" speakers, one speaker connects to the other speaker, and the second speaker connects to the "FRONT-audio-output" connector on your sound-card.
For side speakers, one speaker will connect to the LEFT-side-audio-output port,
and one speaker will connect to the RIGHT-side-audio-output port.
For rear speakers, one speaker will connect to the LEFT-rear-audio-output port,
and one speaker will connect to the RIGHT-rear-audio-output port.