So I have a regular PC not a laptop. I just moved everything around and had to unplug everything from my PC. I've plugged the green subwoofer cord into the green port on the back of the computer but i'm not sure how to get the 2 small speakers working?

The instructions are limited, but the illustrations get the point across. The left inside flap of the box, that the speaker system came packed in, has a 3 step illustration, that will guide you through the assembly. Look at the back of the woofer, and steps 1 & 2 to orient yourself, to where everything is plugged into. Then press the timer button. The green light should illuminate, then slowly rotate the thumb wheel, on the semi-circular shaped speaker control, to your desired sound level. I have a separate headset, that has it's own volume control, that I plug into the bottom of the speaker control, for private listening. I attached a picture of the inside flap, in case you don't have the box.
Good luck !