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 :(

>>12
Any board that still has AGP will likely only have one slot.
Anyone serious about sound will likely be serious about gaming/graphics.
To use their one and only AGP slot for audio instead of video is ludicrous.

AGP8x 17.066 Gbit/s (2.133 GB/s) is a little much for 96kHz sound. Even AGP1x 2133.33 Mbit/s (266.66 MB/s) seems overkill.
How many simultaneous audio channels do you need?!?