Hello, fellow time-wasters!

I've got a problem with in-game sound, namely - there isn't any. The music works, but everything else is on mute (and yes, I've checked options). I'm using very old laptop with XP as OS. Any ideas?

And there is some info for you savvy types:

Operating System: Windows XP Home Edition (5.1, Build 2600)
Processor: Intel(R) Pentium(R) Dual CPU T2370 @ 1.73GHz
Memory: 2040MB RAM
Card name: Mobile Intel(R) 965 Express Chipset Family
SoundMAX HD Audio