Q: Right now I'm missing a driver so my sound won't work, but if I update to windows xp sp3 from sp2 will that update all of my drivers?
A: No it won't. You need to identify the soundcard in your computer and download the driver from the manufacturer's site. If you're not sure of the manufacturer of your soundcard, you can download and install Belarc Advisor. This is a free program that will give you detailed information about the hardware and software that makes up your computer system. Best of luck to you.