This is a midi tower case, and we have checked that the power supply is suitable for Pentium 4 processors. The case can usually be opened by undoing some screws on the back of the case and sliding to outside of the case off. This particular model has one screw at the top of the rear of the case which can be undone without a screwdriver. This allows the top of the case to be slid off, and the two sides then lift upwards to give complete access to the inside of the case.

In this picture, the two case sides have been removed to reveal the case components. Click on the image to open a new window that has a labeled drawing of this case.

The next stage is to add the main components to the Motherboard. Your motherboard should have come inside an electrically insulated bag with a piece of conductive foam on the back of the board. Lay the board down on a desk with this piece of foam underneath.
We are going to install the processor and the memory, and both of these devices are sensitive to static discharge that may occur when you touch them, effectively destroying them. Discharge yourself by touching something that is electrically grounded, such as a radiator.

The motherboard has a large chip called the northbridge chip, and it has a large heat sink. We are going to remove this heat sink and change the plastic conducting strip for a higher performance thermal transfer compound. This step is not essential!
Remove the heat sink by unclipping the clips on each side. The heat sink should come off easily. This picture shows that some of the thermal transfer taps is still stuck to the board chip (its the pink stuff!)