I just reistalled Windows XP and my speakers do not work. They were working fine b4 I reinstalled

All you have to do is install the audio driver. (when you reinstall the operating system you need to install drivers as well (drivers make all the hardware work eg. network, speakers, mouse)
Right click My Computer>properties then click device manager. If there are exclamation mark signs then you have missing drivers. To install drivers you have to click the exclamation mark then click (or right click) "automatically search for drivers" It should find, download and guide you through the installation process.
If your internet does not work you need to find your network drivers which can be on a disk. You can also manually download the most recent drivers for your sound card at the manufacturers website.

You will need to set up your sound card and drivers again if your computer came with a motherboard disk the sound drivers could be on it
click start control panel sounds and audio,volume,advanced,speakers select appropriate speakers or audio you will find 3 drop down lists make the necessary adjustments there or
click start control panel,administrive tools,computer management,device manager,sound video and game controllers could be a yellow question mark? right click to re-install drivers
if you dont have a motherboard disk you will need to download the sound drivers
hope this helps

There is no problem with speakers.
You have to reinstall the sound driver.
If you have an 'onboard' sound system, use the motherboard CD to install it. If you don't have it, goto the motherboard manufacturer's site and download the sound driver.
If you have a separate sound card, use the sound card CD to install it. If you don't have it, goto the sound card manufacturer's site and download the driver.