|The speakers themselves do NOT need drivers. The sound adapter they are plugged into needs a driver. How do you know the Realtek driver is working properly if the speakers don't work?|
If different speakers work okay, it could mean the Altec ones are faulty.
Or you may have installed the wrong Realtek driver. The only place to get the correct driver is from your laptop or PC manufacturer's website for a factory-built PC, or from the motherboard manufacturer's website for a custom-built PC.