Windows Xp Problems, Please Tell Me How To Install The Drivers And Utilities Disc.?

I re-installed windows xp, and installed the operating system disc, but I still don’t have sound, screen resolution control ( it won’t let me change it), or internet. I tried to install the drivers and utilities discs that came with my computer, but I must have been doing it wrong because it didn’t install anything. Please walk me through the steps to complete the installation. (P.s. I am a total computer noob, so please be simple.