Once you have two HDMI cords leading out of your computer, simply hook one of them up to an HDMI input, and the other to an input on your AV receiver. Tune your TV to the input your PC is connected to, and do the same with your receiver. If you don't have an HDMI connection port on one of the devices, you can simply look online for an adapter for whatever port you have to HDMI. However, do keep in mind that if you're going to connect, for example, a VGA adapter to an HDMI adapter, you won't have any sound. Also, these adapters can get expensive thanks to the fact that they need to convert an analog signal to a digital one.