New dell; couple of problems

I recently bought a Dell (lol); after a couple days use, I get a horrible screeching noise anytime anything makes a sound (music, video, etc). Any way to fix this? I've looked for new drivers for teh card, but I've found nothing. :\

Also, for some strange reason, my cable connection seems to be capped at 242kbps down and 34 up. Any way to remove this stupid cap? I've fiddled with the network card's settings to no avail.

HALP :(

>>11
What's so bad about using AGP for sound?  Any serious card needs the extra bandwidth... I'd rather have a PCI-Express card or whatever that new standard it though.