You need to connect the audio connector from your CDROM drive to the sound card so that you can listen to CDs through your PCs sound system. The CDROM drive will have come with a connecting lead, which is usually terminated with the same type of connector on each end. Plug one end into the CDROm drive and route the cable down to the PCI card slots

The PCI cards fit into slots on the motherboard, with one side of the PCI card exposed through a hole in the case. In this image, we have removed all of the metal slot covers from the case.

Insert the card carefully, making sure that it is properly plugged into the motherboard. Secure the card (this one is a network adapter), with a screw.

Continue to add PCI cards in sequence.

The WinTV card is quite tall, be careful not to twist the card when you insert it.

The Asus P4B266 motherboard has four additional USB 2.0 slots which use a "riser" that is plugged into one of the PCI slots instead of a card. The trailing leads need to be connected to the relevant place on the motherboard.

This soundblaster card will generate a lot of heat, so it is ideally situated next to the USB riser connector because the heat will not cause any damage.

Whilst most of the above cards are optional, the VGA card is essential. The VGA card (this is an NVIDIA 4MX 64mb) has a special slot on the motherboard because it uses a much faster data bus. Handle the VGA card carefully, and make sure that you close the "gate" clip on the end of the card. This particular system would not boot up because the clip was inadvertently left open

The Zelman flower cooler uses a large fan held above the heat sink with a bracket that connects to the PCI slots. The fan uses a small device to slow the speed of rotation down and therefore reduce the noise that the fan produces. This is only advisable when a very efficient heat sink such as the flower is used.

Now that the internal components are all installed, you should spend a small amount of time and effort neatening the cable runs up inside the PC. The fan bracket is ideal for routing the CDROM audio cable and the additional 12v motherboard connector.

I was initially sceptical about connecting a power cable next to an audio cable, but there was no loss in audio quality. This image also shows the black fan speed controller secured neatly onto the case with cable ties.