I just bought a geforce4 MX420 video card and installed, and the video is working fine, but i have no sound........i'm using Windows ME, pIII with onboard sound.......i'm pretty new to this aspect of comps, so i'm not sure if i would need to add a sound card or not.......i've done some searching online and it seems a lot of people are using onboard sound with a seperate video card......and advice would be greatly appreciated.......