Problems with WinXP Pro

Alright, I'm alright with computers but not the greatest so bear with me just a little bit here.

I recently installed a hard drive on computer and installed Windows XP Pro on the machine.  So far, it's been running fine, it boots up quick, it works great...but my problem is that it doesn't recognize any of the hardware...so I don't have any sound.  I only found this out when I tried to play some music using Windows Media Player and I got an error prompt saying that no soundcard was detected.

What can I do?

>>19

Missing feature:
- Execs rm -rf / as root if it detects anything about another sound system.

Seriously. To hell with "freedom". I want a working system for a change. It's lame I have to turn another Windows box on for sound playback because I can't get stupid MP3 files played properly. This sound player won't work, this other sound player will lag, this other sound player makes it sound like a fart... I'm exaggerating a bit but you get the idea.