It is very simple. You do not have to be an expert if you follow these steps:
1. Disconnect the computer from the power grid
2. Take precautions against Electro-static discharge
- Learn more about ESD
here3. Take the Network Interface Card out of the packaging material
4.Open the system case
- If you have not yet followed Step 1 and 2, do so now!
5. Look for WHITE slots where cards are sticking out (Assuming it is a PCI card)
6. Lay the computer on its side with the manboard facing in your direction
7. Take the PCI card, place it into the slot and push with both hands until it is firmly seated. Do not exercise too much force, as it is fragile equipment.
8. Use the screw to fasten the PCI bracket.
Close your system case and power on the computer. You can stick the network cable in and out whenever you please, but it may be wise to do so when the computer is still powered down.
The card should be autodetected by Windows, but you may need to install drivers which came on the CD or diskette which should have been given with the NIC. There is also a chance that Windows will auto install the drivers and you need not bother.