[db00mitsu]

Hey. This may not be related, but this issue started when my Webroot Spysweeper encounter a trojan, which was Quarantined after it found it. At this point the system sounds stopped working (startup, clicking on items, etc), but I could play music using Winamp. I did some searching on the net and performed a few of the recommended tasks to fix this issue.
The problem is is that no sounds will play at all now and I get the pc speaker beep when windows loads, I am asked if I want to close a box (like mozilla). Also, and this may be as a result of the PC installing/looking for other drivers (not sure), but each time I load up windows (from a restart) it locks up my internet browser and I need to close it (which takes ~15 min to close) since it goes to the not responding state. I will attach a picture of the items in the device manager and maybe you can guide me on what to do?? I'm really fed up with this and I cannot find the correct driver or what to do. I tried downloading a driver off of Dell's website, since I think they have the rights to the version I need, but I was thinking that the correct driver is probably still on the PC somewhere.
My motherboard is
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Motherboard Properties
Motherboard ID <DMI>
Motherboard Name Dell Inc. MM061

Front Side Bus Properties
Bus Type Intel GTL+
Bus Width 64-bit
Real Clock 533 MHz
Effective Clock 533 MHz
Bandwidth 4265 MB/s

Motherboard Manufacturer
Company Name Dell Computer Corporation
Product Information http://www.dell.com
BIOS Download http://support.dell.com
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1. How do I stop all the Microsoft Kernel ..... items from being installed each start up?
2. More importantly, how do I get SigmaTel High Definition Audio to work again?

I hope I didn't forget anything. The PC works fine otherwise.