and I can certainly sympathise with you when you say how confused you can become when confronted with a list of drivers.
In fact, such lists are often not as daunting as at first they might seem. Provided you have details of the model/version of the hardware you're using you'll find that you can discount all but the appropriate drivers. Unfortunately it isn't always so easy to get details of the bits and pieces inside the computer's case - many people are quite happy never to look inside. Often your computer's original documentation will contain the information you require, and if that fails you can always use a utility like Sisoft Sandra
click here to try to determine what's under the bonnet. Sandra will analyse your computer's hardware and produce an on-screen report.