No sound after windows XP installation + realtek installation

Hello again, I've downloaded the driver as specified and I've restarted the computer but I still have no sound. I checked the Device manager and I don't see realtek anywhere. All I see Under "sound video and game controllers" is Audio Codecs, Gameport for thrustmaster ACM (first port), Legacy Audio Drivers, Legacy Video Capture Devices, Media Control Devices, Microsoft Kernel System Audio Device, Microsoft WINMM WDM Audio compatibility driver, MPU-401 Compatible Midi Device, and Video Codecs. Please help, thanks alot!