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?

>>7

Have you used that product key before, once? If you use it ONCE then MS won't let you use it to install windows a second time if any of the hardware is different. It's a retarded anti-piracy measure. You have 30 days to buy a new license for XP from Microsoft to install your copy of windows on that machine, if you don't do this then windows will begin cutting down on its ability to perform certain functions, little by little, until it finally only allows you to do ONE THING when you boot: register.

It's fucking retarded.

There are ways around it, just like there are ways around every software protection scheme; and I'm not going to tell you what they are because that's illegal, but if you're a smart enough lad you can figure them out.